This is Dremel's slim design rotary tool designated for engraving and crafts. It's about the size of a marker, fits comfortably in handle and is easy to maneuver. It has adjustable speed. Great for engraving glass, jewelry, leather, stones, wood or anything else. Can also be used for polishing, as well as some very light cutting, sanding, and drilling. (however, only a bit for engraving will be included) And since it's the season, it also would be great for carving intricate designs on pumpkins.
If you're looking for something more economical I also have a very basic rotary tool for $4(photo 3). It is non adjustable single speed and not as powerful.