Surf the forum here and check out all of the e-revos. There are a ton of them here to give you ideas. Everything from simple but efective to very elaborate setups for them. I'm sure you can find some examples to get some ideas from.
Edit: Check out this thread for a very simple but effective battery mount solution. Just a flat plate with a strap or 2 to hold the batery.
http://www.rc-monster.com/forum/showthread.php?t=6105