Block-like Combinable Stamp "Brosta" Wins Semi-Grand Prize at SP Tool Contest
Yamada Co., Ltd. exhibited for the first time at the "Premium Incentive Show" held in Ikebukuro from April 8-10, 2026. Among its various stamp services, the freely combinable stamp "Brosta" won the Semi-Grand Prize at the SP Tool Contest. The company, founded in 1970, continues to propose new ways to utilize stamps, focusing on original stamps for small lots, stamp rallies for events, experiential novelties, and products for inbound tourists.
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- 📰 Published: April 30, 2026 at 19:00
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Yamada Co., Ltd. (Location: Nerima-ku, Tokyo) made its debut exhibition at the "Premium Incentive Show" held in Ikebukuro from Wednesday, April 8, to Friday, April 10, 2026.
At this exhibition, the company showcased various stamp services that can be utilized for corporate novelties, promotional items, event tools, and inbound tourism products. Among them, "Brosta," a stamp that can be freely combined like building blocks, received the Semi-Grand Prize at the SP Tool Contest.
Yamada Co., Ltd., founded in 1970 as a manufacturer and wholesaler of seals and stamps, has long been engaged in the manufacturing of seals, rubber stamps, and stamps for corporations. In recent years, the company has also been focusing on proposing new ways to utilize stamps that adapt to the times, such as original stamps for small lots, stamp rallies for events, experiential novelties, and products for inbound tourists.
"Brosta" Wins Semi-Grand Prize
About "Brosta," the Semi-Grand Prize Winner of the SP Tool Contest
"Brosta," which received the Semi-Grand Prize at this SP Tool Contest, is a stamp that can be freely combined like blocks.
By combining multiple stamps, users can freely change patterns and messages, enjoying various expressions depending on the user. This is its characteristic feature.
It can be used not only individually but also in various scenarios such as in-store events, workshops, novelties, character goods, and stamp rallies, as the range of expression expands with how they are combined.
Encouraged by winning the Semi-Grand Prize on its first exhibition, the company will continue to propose the "joy of combining" and the "joy of experiencing," in addition to the "joy of stamping."
Main Products and Services Introduced at the Exhibition
Yamada Co., Ltd. Booth at the 73rd Premium Incentive Show
Stamp Service for Making 1 Illustration from 10 Pieces
This is a service that allows the production of stamps using original illustrations or characters, starting from 10 pieces per illustration.
Since small-lot production is possible, it can be used for character goods, event merchandise, products for artists and creators, and corporate novelties.
Illustration Stamp Service Website:
https://minnano-hankokoubou.jp/
Illustration Stamps Available from 10 Pieces
"Hanga Hanko" - layered stamping to complete an illustration
"Hanga Hanko" is a stamp where multiple stamps are sequentially layered to complete an illustration, similar to a woodblock print.
Since the process of completion itself can be enjoyed, it is suitable for workshops, in-store experiences, event planning, and tourism-oriented projects.
It can be used as an experiential content that allows visitors to actually participate and enjoy, rather than just being a distributed novelty item.
Inbound-oriented Seal "Kanji Signature"
"Kanji Signature" is an inbound service that expresses the names of foreign customers in Kanji and produces them as seals.
As a unique Japanese souvenir, it is suitable for deployment in tourist spots, hotels, airports, commercial facilities, and experiential shops.
It is proposed as a product that allows overseas customers to enjoy "inkan" (seals) as a part of Japanese culture.
Block-like Combinable Stamp "Brosta"
"Brosta" is a stamp that can be freely combined like blocks.
Since the design and usage expand through combination, it can be used for a wide range of purposes such as children's events, character projects, in-store promotions, novelties, and workshops.
This time, it received the Semi-Grand Prize at the SP Tool Contest.
"Oshi Stamp" for stamping in your favorite color
"Oshi Stamp" is a stamp project for "Oshi-katsu" (fandom activities), combining ink in one's favorite color with a stamp.
It can be used for product development that caters to fan sentiments, such as character goods, idol merchandise, artist goods, sports team merchandise, and event goods.
By combining the joy of choosing colors with the experience of stamping, it enhances the added value as fan merchandise.
From consumption of goods to consumption of experiences: Experiential novelty "Fabric Stamp"
"Fabric Stamp" is an experiential novelty that allows visitors to create their own original goods by stamping on tote bags or fabric products on the spot.
It's not just a novelty that is distributed and forgotten, but a project that enhances the event's impression and brand experience by allowing participants to enjoy the experience itself.
It can be used as an "experience" that remains in the participants' memories, not just as a distribution of goods.
Stamp Rally Stamps
We also offer stamp rally stamps that can be used for events, commercial facilities, tourist spots, exhibitions, and campaigns.
Stamp rallies are effective measures for improving visitor circulation, promoting participation, and creating touchpoints with visitors.
Yamada Co., Ltd., depending on the application and project content.
At this exhibition, the company showcased various stamp services that can be utilized for corporate novelties, promotional items, event tools, and inbound tourism products. Among them, "Brosta," a stamp that can be freely combined like building blocks, received the Semi-Grand Prize at the SP Tool Contest.
Yamada Co., Ltd., founded in 1970 as a manufacturer and wholesaler of seals and stamps, has long been engaged in the manufacturing of seals, rubber stamps, and stamps for corporations. In recent years, the company has also been focusing on proposing new ways to utilize stamps that adapt to the times, such as original stamps for small lots, stamp rallies for events, experiential novelties, and products for inbound tourists.
"Brosta" Wins Semi-Grand Prize
About "Brosta," the Semi-Grand Prize Winner of the SP Tool Contest
"Brosta," which received the Semi-Grand Prize at this SP Tool Contest, is a stamp that can be freely combined like blocks.
By combining multiple stamps, users can freely change patterns and messages, enjoying various expressions depending on the user. This is its characteristic feature.
It can be used not only individually but also in various scenarios such as in-store events, workshops, novelties, character goods, and stamp rallies, as the range of expression expands with how they are combined.
Encouraged by winning the Semi-Grand Prize on its first exhibition, the company will continue to propose the "joy of combining" and the "joy of experiencing," in addition to the "joy of stamping."
Main Products and Services Introduced at the Exhibition
Yamada Co., Ltd. Booth at the 73rd Premium Incentive Show
Stamp Service for Making 1 Illustration from 10 Pieces
This is a service that allows the production of stamps using original illustrations or characters, starting from 10 pieces per illustration.
Since small-lot production is possible, it can be used for character goods, event merchandise, products for artists and creators, and corporate novelties.
Illustration Stamp Service Website:
https://minnano-hankokoubou.jp/
Illustration Stamps Available from 10 Pieces
"Hanga Hanko" - layered stamping to complete an illustration
"Hanga Hanko" is a stamp where multiple stamps are sequentially layered to complete an illustration, similar to a woodblock print.
Since the process of completion itself can be enjoyed, it is suitable for workshops, in-store experiences, event planning, and tourism-oriented projects.
It can be used as an experiential content that allows visitors to actually participate and enjoy, rather than just being a distributed novelty item.
Inbound-oriented Seal "Kanji Signature"
"Kanji Signature" is an inbound service that expresses the names of foreign customers in Kanji and produces them as seals.
As a unique Japanese souvenir, it is suitable for deployment in tourist spots, hotels, airports, commercial facilities, and experiential shops.
It is proposed as a product that allows overseas customers to enjoy "inkan" (seals) as a part of Japanese culture.
Block-like Combinable Stamp "Brosta"
"Brosta" is a stamp that can be freely combined like blocks.
Since the design and usage expand through combination, it can be used for a wide range of purposes such as children's events, character projects, in-store promotions, novelties, and workshops.
This time, it received the Semi-Grand Prize at the SP Tool Contest.
"Oshi Stamp" for stamping in your favorite color
"Oshi Stamp" is a stamp project for "Oshi-katsu" (fandom activities), combining ink in one's favorite color with a stamp.
It can be used for product development that caters to fan sentiments, such as character goods, idol merchandise, artist goods, sports team merchandise, and event goods.
By combining the joy of choosing colors with the experience of stamping, it enhances the added value as fan merchandise.
From consumption of goods to consumption of experiences: Experiential novelty "Fabric Stamp"
"Fabric Stamp" is an experiential novelty that allows visitors to create their own original goods by stamping on tote bags or fabric products on the spot.
It's not just a novelty that is distributed and forgotten, but a project that enhances the event's impression and brand experience by allowing participants to enjoy the experience itself.
It can be used as an "experience" that remains in the participants' memories, not just as a distribution of goods.
Stamp Rally Stamps
We also offer stamp rally stamps that can be used for events, commercial facilities, tourist spots, exhibitions, and campaigns.
Stamp rallies are effective measures for improving visitor circulation, promoting participation, and creating touchpoints with visitors.
Yamada Co., Ltd., depending on the application and project content.