Google is asking people what they would do with their developing platform for wearable computing - Google Glass. I think I'd combine it with another current technology, and make it into a cephalochromoscope or cephscope.
I'd do it by combing these two technologies; Google's Glass and the Muse brainwave-sensing headband.
(Why not merge these two technologies?)
A cephscope is used in Philip K. Dick's 1977 novel A Scanner Darkly; it is a brain-scan device presented as a commercial product in the novel, and is used for entertainment purposes.
Your cephalochromoscope that cost you nine hundred dollars, that you always turn on and play when you get home - Ernie and Barris were babbling away about it...
For those who didn't get the message about Google Glass yesterday, the company is looking for people who would like to make use of their product, and is offering a few people the chance to be early adopters of the product. See this video in case you missed it.