[Joey]

Aside from getting tiny scratches in it, Sculpey is remarkable strong. I used it for making tiny figure-people for Dungeons & Dragons, which were thrown repeatedly, and they all survived just fine. If you sand, paint, and clearcoat the stuff (you'd want to make it a little bulky to begin with for this approach, since sanding on this surface would take a lot off very quickly), then even the scratches shouldn't be a problem.