X-Y coordinate mouse box - á la Etch-a-Sketch¶

Arduino Micro has Atmel 32U4 as a brain, and this chip can act as a a generic HID device and emulate a mouse. So I'll attach two rotary encoders for X & Y, probably a IR sensor, so it can also take commands from a remote control, and put it in a box. With a nice cable and two knobs on it it should convince anybody to abandon their trackpads forever.