Stamps out of foamed rubber

I used 3 mm thick white foamed rubber and (like I said before: no much difference between lab and stuff) a scalpel. This time not the one for modeling polymer clay (fimo) because it is not sharp enough. It is perfect to cut straight through the polymer clay but not through anything else anymore! Afterwards I just glued them on card board although I am know thinking this was not my brightest idea (just how to wash them...?).

Ornaments, cats and an octopus... I guess you are not really surprised ;) Where it was possible I made a positive and negative one.

Their purpose: Dye fabrics! :)