nice idea. How well did it work with clay?
I was thinking of cutting up an eraser.

Umm its not bad. The reason I didn't use rubber/eraser is because I don't have the scooping tool to do it. I used an exacto knife and a needle like clay carving tool. You also kinda have to make sure you carve the sides evenly. It prob also doesn't help that I don't have an ink pad. I just bushed over them with some calligraphy ink. but over all I think they came out pretty well? for first attempts at least?

looks good to me ^^

The fluffy dog is precious!

thank you!

Stamps made from polymer clay? I've never done it that way before but I guess it makes a more durable stamp if it bakes even.

Personally, I made stamps with either a thick rubber block of Speedball's Speedy-Cut carving blocks or a piece of linoleum block if you want to go for something more durable. The speedy-cut block is easier to cut and trim to your desired size.

This is what I made using Speedball's Speedy-Cut- http://www.furaffinity.net/view/5199405/

These stamps where just something I did with things laying around my room. If I had the tools I would have done it with rubber.
But I'll keep this in mind when I hit up the craft store next time.

An xacto knife works on speedy-cut too. :]