if you do any kind of drawing, or image editing, then pen tablet is necessary. Far better than mouse.
Wacom Intuos pen tablet
this one, fairly standard, can be used as a touch pad, and battery-free.
- Have fun with photos and art with included downloadable creative software - Autodesk Sketchbook Express and ArtRage Studio
- Replaces your mouse and turns your computer into a digital drawing canvas
- Battery-free, pressure sensitive pen and digital eraser helps you to draw thicker and thinner lines depending on how hard you push on the pen
- Use your fingers to navigate, scroll, zoom your artwork with multi-touch gestures
- Four customizable ExpressKeys that put your favorite shortcuts like undo or copy/paste at your fingertips
- Connects to Mac or PC and works with any software program
- Small Compact size, 8.3-by-7.0 inches, is perfect for limited desktop areas and can be setup for both left and right handed use
- Work cord-free with Wireless accessory kit sold separately