Where can I purchase the "Tsumekyun Pack"?

It will be available at the Handmade Studio MYmama store and its Rakuten Ichiba shop, with sales starting on June 10, 2026.

Is it safe for children to use?

Since it does not use resin, it is relatively safe for children to enjoy. However, as it contains small parts, please use it under adult supervision.

What kind of parts are recommended for filling?

You can freely use decorative parts and filling materials such as beads, glitter, small charms, and stickers. Parts in your favorite 'Oshi' colors are also recommended.

How can the finished keyholders be used?

They can be attached to various items such as bags, pouches, smartphones, and keys, serving as unique original accessories.

Are any additional supplies needed besides the kit?

The kit can be completed on its own, but tweezers can be helpful for handling small parts. Glue is not required.

Handmade "Package Keyholders" with New Product "Tsumekyun"

Published Jun 10, 2026 6:00 PM ・ Updated Jun 13, 2026 11:59 PM ・ 10 min read ・ Source: PR TIMES

MY mama Co., Ltd. will launch "Tsumekyun Pack," a new product that allows users to easily create package keyholders without resin. Using real package materials, users can simply fill it with decorative parts to create "store-quality" keyholders. It's also ideal for parent-child crafting and supporting favorite artists (Oshi-katsu).

In recent years, charms attached to everyday items like bags and smartphones have remained popular.

Among these, "blister packs," which resemble miniature versions of actual product packaging, are gaining attention for their fresh, three-dimensional design.

Furthermore, with the deep integration of social media into daily life, interest is growing across a wide range of demographics – from those who want to customize their belongings to express their individuality, to handmade artists seeking to express their unique worldview, and families looking for at-home activities – in "things they can make themselves."

In response to these market trends, MY mama Co., Ltd. has developed "Tsumekyun Pack," a new product that allows users to enjoy making package-style keyholders without using resin.

By using actual packaging materials, anyone can easily create "store-like" keyholders simply by filling them with decorative parts and other small items.

Package Materials Requiring No Resin

"Tsumekyun Pack" is a craft material that allows you to create package-style keyholder works without the need for resin.

It utilizes plastic materials commonly used in general product packaging, making it lightweight, easy to handle, and resulting in a transparent finish.

Without difficult processes or specialized tools, you can enjoy creating three-dimensional keyholders by simply filling and combining parts.

Structure Designed for "Easy and Cute Creation"

During the planning phase, multiple samples of packaging materials were procured and tested for thickness, strength, and ease of use.

As a material for enjoying handmade crafts rather than a finished product, not only visual appeal but also ease of work is important.

Therefore, "Tsumekyun" is designed with a structure that allows parts to fit snugly. This specification makes it easy to assemble, even for beginners, minimizing confusion.

Fun Designs Unique to Package Shapes

We focused on a size and design not found in commercially available products, incorporating scalloped edges on the package design and heart shapes within the compartments, finishing even the smallest details to be cute.

As the structure is designed for filling with decorative parts and other materials, parts can be arranged in separate compartments.

By filling it with your favorite colors, motifs, and parts, you can express your own small world.

Additionally, it comes with pre-drilled holes so it can be used as a keyholder.

Ideal for Parent-Child Crafts and Oshi-katsu

"Tsumekyun" is also suitable as an "at-home activity" for parents and children to enjoy together.

Since it doesn't use resin, it can be approached more casually, and the process of selecting, arranging, and filling parts can foster children's creativity.

Furthermore, by filling it with parts in your favorite colors or combining favorite motifs, you can enjoy it as an item for "Oshi-katsu" (supporting your favorite artist/idol).

We propose creating your own custom keyholders that can be attached to bags, pouches, or smartphones.

Making the Joy of Handmade More Accessible

"Tsumekyun" is a product designed to make the popular package keyholders easier and more accessible to enjoy.

The time spent filling it with your favorite things. The joy of attaching your finished creation to everyday items. A special finish that makes you want to show it off to others.

Through "Tsumekyun," MY mama aims to deliver the joy of handmade crafts and the pleasure of customizing your items to express yourself.

Product Overview

Product Name: Tsumekyun Release Date: June 10, 2026, 10:00 AM onwards

Price:

Set of 5: ¥399 (tax included) / Set of 50: ¥2,992 (tax included)

Complete Kit: ¥2,999 (tax included)

Sales Channels: Handmade Studio MYmama Rakuten Ichiba: https://item.rakuten.co.jp/auc-my-mama/2638r/

Inquiries Regarding This Matter

MY mama Co., Ltd.

Official Website Inquiry Form: https://mymama.co.jp/contact/

About MY mama Co., Ltd.

"Ignite our customers' creative passion and let them feel the joy of making."

MY mama Co., Ltd. is a company that plans, manufactures, and sells handicraft materials.

With all employees adopting the perspective of handmade users, our policy is to provide high-quality products at affordable prices, developing and releasing new products every month.

The founder's unwavering passion for handmade crafts, spanning over 20 years, has shaped our corporate culture to this day.

Rakuten Shop: https://www.rakuten.ne.jp/gold/auc-my-mama/

Yahoo! Shop: https://shopping.geocities.jp/my-mama/

Amazon: https://www.amazon.co.jp/stores/node/5326726051

Instagram Live (@tedukuri_my_mama)

https://www.instagram.com/tedukuri_my_mama/

Company Name: MY mama Co., Ltd.

Location: 2-291 Minamino, Minami-ku, Nagoya City, Aichi Prefecture

Representative: Sachiko Kanie

Official HP: https://mymama.co.jp/

Business Activities: Planning, manufacturing, and sales of handicraft materials Keywords:

FACT BOX

Source: PR TIMES
Category: New Product
Organizations: MY mama

Handmade "Package Keyholders" with New Product "Tsumekyun"

⚡ Key Points