One of the nifty niche clays is Sculpey eraser clay. The clay comes in a few colours and some kits, complete with project sheets and makes a reasonable eraser as long as you don’t over bake it. Over curing it makes it much less eraser-y and much firmer. Sculpey offers a few eraser clay projects as well like this watermelon.
Eraser clay would make nifty projects for the kiddo heading back to classes in your house. Let them create a custom eraser (or set of erasers). Make pencil toppers from eraser clay or pencil case charms so the erasers don’t disappear quite as fast.
Havé tried and hate it. It doesn’t erase well.Love using that clay to make molds or mixed with regular clay to make strings of clay.
I didn’t have great luck when I cured it for longer than the directions – which I do with all the other clays – but got something somewhat eraser-y when I followed the directions.
The kids had fun with it in classes and I used the scraps for molds later.