Tech In My Bag For a Music Festival

This Thursday, I'm heading to the Bonnaroo Music Festival. While a four-day music festival isn't the first place you'd think about toting your gadgets, since I'm going to be checking out geeky acts like Ok Go and playing a serious amount of Green Day Rock Band in the special Rock Band tent. Plus, I'll have to keep up with my festival-going friends, and post plenty of updates for non-festival-goers. Here's what I'm bringing along to optimize my festival experience.