I just received a couple Raspberry Pi units and got a couple of cases from Adafruit.
My first plan is to get a DE-SWADJ3 switching regulator from Dimension Engineering so the Pi can get what it needs from a 12 volt battery pack. I will be combining this with a HSMM-MESH node to run as a portable web, D-RATS, and TeamSpeak server. I'm not sure how many users it will support at the same time, my guess is that TeamSpeak will be the bottleneck.
If things go well, I want to move the Raspberry Pi to a dedicated 3 GHz access point for regional HSMM communications. For the price, it can't be beat!
Chris Arnesen, KU7PDX