So, if you’re searching for a good alternative to Worbla, think about switching to EVA foam! In general, there are a million different kinds of EVA foam in various thicknesses, colors, densities and chemical compositions. The most well known is probably cheap puzzle foam mats, which you can easily find on Amazon. They are around 10mm thick, come in a puzzle shape of 60 x 60 cm (24 x 24 inches) and have a rough texture on one side.
They are the cheapest version (6 mats for 23$), but it will cost you extra time and effort to built something (since you might have to get rid of the texture again).
