I've already started planning the next step in my camping/personal entertainment bundle; a mini projector coupled with a Raspberry Pi, XBMC and the XBMC remote for my phone. I haven't played much with the XBMC so I need to figure out if I can stream from my phone through the R-pi, which I think I can. This can then be BT paired to the previous speaker project and would be either recharged from the speakers or powered straight from the speakers.
Streaming Netflix and Hulu while sitting around the campfire. Sure, that's not why you go camping, but heck, why not?