The exuberantly named Hank Hoodoo (well, that's how he's described in this Slashdot link about the year in SL that points back here) points me to Phillip Torrone's Flickr pics of his new wearable Snow Crash-inspired computer with VR headset and glove for use with Second Life. Definitely check out these pics. Phillip says he should have a video of it in action up on MAKE pretty soon.
i made a low(ish) cost personal virtual reality system to use in second life, a virtual world. the functionality is modeled after the book snowcrash.
-always on connection (wifi and evdo)
-xyz axis for navigation
-lightweight (under 10lbs)
i did the first real test on 12/31 it all worked!
the way i am modding the ui is working out pretty well and is useable i think.