Stampin' Up has a new kit called Undefined. It contains the tools you need to carve your very own stamp designs. You can make 4 stamps with the kit. Additional items can be purchased to make more but I bet I can get some rubber for carving with a Michaels coupon too.
Now, dont be shocked that the kit doesn't come with written instruction. There are pictures but I found a google search to be much more helpful. The tools are what you would expect from SU! They are well made and work great.
I hesitated to buy the kit but now I am glad that I did. It was fun to design my own stamps with my daughter.