Carving on rocks. In the blog post she said... "All you really need for this project is a Dremel (I used the new cordless Dremel 8220), a few different attachments, a bowl of water and rocks."
Dremel 7300-N/8 4.8-Volt Cordless Dremel MiniMite Two Speed Rotary Tool - Walmart.com
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Dremel 7700-1/15 MultiPro 7.2-Volt Cordless Rotary Tool Kit
Enter for a chance to win your very own Cordless Dremel Rotary Tool. This little tool has many ways to help you improve the way you work on projects.
Dremel 7300-N/eight four.eight-Volt Cordless Dremel MiniMite Two Velocity Rotary Software. >> See more at the photo link
Dog Pet Toe Nail Grooming Tool Cordless Variable Speed Rotary Fits Dremel Bits *** Read more at the image link.