I should maybe have gone to Siggraph '07 in San Diego - despite my general conference aversion. They were covering wearable technology - like a bikini1 that charges a mobile music player. Actually, a bikini that charges a phone would be more useful. If the phone was in the top, then it would add a whole new aspect to the phrase "why are you talking to my tits".
1. Just as a bonus, some of you might not know the etymology of the word "bikini". Two piece swimsuits were invented at about the same time as H-Bombs. The first such device, when tested, blew the middle out of Bikini Atoll. Hence the name bikini was used for a swimsuit with no middle bit.