These are some larger sticky foam stamps used to add texture to Gelli prints. You can really explore making exotic and creative designs with inexpensive materials. Can brayer paint on these and add to existing designs.
Homemade Stamps, using craft foam sheets glued to 'Jenga' wood blocks. Any wood offcuts would do. If you cut all the wood the same size, all the designs can be interchanged for pattern making! Great idea.