Cork is a terrific vehicle for stamps. Or so I'm told. I thought I'd be able to create an adorable turtle stamp from a cork relatively easily based on what I'd read. It didn't work out.
The directions told me to cut the end of the cork off to have a perfectly flat surface. I may have had a poor slicing tool but I did not end up with a flat surface. In fact, I used the other side of the cork and was able to make an okay drawing of a turtle.
Granted, it's not perfect but I'm not artist. A more adept individual would probably have better luck. Also, make sure you have some stamp ink on hand.
Another one to try: A wine cork cork board is far more exciting than a boring old-fashioned cork board.