The Japanese project MYMORI introduces a bio-manufacturing kit that lets families grow toys from mushroom mycelium. The kit shows how renewable materials can become part of daily life and gives children a playful way to learn about circular design.

How It Works

Users combine mycelium with agricultural byproducts and place the mix inside a reusable mould. Within about a week, the material grows into shape. The result is a lightweight toy with a firm core and a natural white surface. It also carries a subtle mushroom scent, which makes the process a multi-sensory experience.

A Circular Approach

The toys come from natural and biodegradable materials, so they return to the soil after use. In addition, the PETG plastic moulds are recyclable and designed for repeated use. As a result, the kit reduces waste and demonstrates how renewable feedstocks and durable components can work together in product design.

Learning Through Play

Children observe how the mycelium spreads, decorate their creations, and test different ways to play with them. This hands-on process makes the lifecycle of biobased materials visible and easy to understand. In addition, it turns sustainability into an interactive learning experience.

Design Relevance

Although MYMORI is marketed as a toy, the concept is useful for designers in other fields. For example, product and packaging designers can explore how mycelium may work as a renewable alternative to plastics or foams. Interior designers can also take inspiration from its natural look and feel. Therefore, the project demonstrates how biological growth can become part of the design process and offers new directions for sustainable material innovation.

Source & photos: MYMORI