The Dremel rotary tool is the best my husband has used:
- Variable speed from 5,000 to 35,000 rpm
- Lightweight design for comfort during prolonged use
- Comfort grip housing for easier handling and better tool control
- "Dove-tail" feature for Dremel-exclusive attachments
- On board tool storage keeps your wrench close at hand
- Click-and-set on/off switch allows precise speed selection
- Cool-running ball bearing construction for smooth and quiet operation
- Replaceable motor brushes extend tool life
And you can get the tool and about 25 attachments for under $50.