Now you can really bother that miscreant in the next cubicle with Finger Drums, a mouse pad-sized annoyance device whose manufacturer deliberately neglected to include a headphone jack.
The touch-sensitive pad gives you an entire miniature electronic drum set at your disposal, including a snare drum, high hat, three tom toms, a bass drum and two cymbals. It can record 30 notes, and includes six demo drum patterns with which you can play along.
There's a control to adjust tempo and volume, and then there's your cubemate's favorite, the on-off switch. Including a quartet of AAA batteries, it's $32.