Based on this product's specifications, here are some alternatives and similar models
Derform GLINA SAMOUTWARDZ 0.3 kg — Derform self-hardening modeling clay 0.3 kg
Summary description:
Derform GLINA SAMOUTWARDZ is a 0.3 kg packet of self-hardening modeling clay designed for sculpting, craft projects and educational use. The ready-to-use clay air-dries without baking to form a solid, paintable surface. Suitable for hobbyists, school activities and small repairs where a malleable, lightweight modelling material is required.