Ok so you've got your Wiimote [1], your P5 glove [2], your Count Zero-esk Deck [3], and maybe even a nostromo [4], but it's just not enough.  Maybe what you need is the OCZ Neural Impulse Actuator Brain Mouse [5].

Ok so I'm not running out to buy one [6] really, but I'm keeping it in the back of my mind for fun toys with no clear use.  But it's a fun funky device to take a look at.  Say in this teardown [7].

On the other hand I highly recomend the Kinesis Advantage keyboard [8], got RSI or even hints of RSI, then the price tag is worth it!  7 years of happy hands say yes.  Also though I've got a P5, Wiimote, they sit in a drawer unused 99% of the time even though they are quite fun.