Sadly, those are still out of my price range. (And really only coming close to entering in at the sub $100 realm.)

I've actually wanted to get one of these, if not just for the coolness factor.

http://store.mcetech.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=XPKIT&Category_Code=CLRNCHD&Product_Count=3

. That is one monster PRAM battery... and I do need a new one.

I've seen those NuPower batteries before. Apparently they provide some insane battery life. (Like 4 hours with one battery!)

A G4 500 would also be awesome : (Not that I'll ever find one.)