No worries mate - you and xDansomee literally did all of the leg work digging these out. As a result I will never be without recording my game!
Most of the MiniDV cams on ebay are now hidden in things like watches, glasses, pens and keychains - meaning you can really cut down the profile or a barrel cam to almost nothing. The one I have is now relatively Archaic, in that respect
Oh, and poundland WERE (I'm not so sure anymore) doing portable phone recharge kits where you could recharge from a set of AA batteries through a USB connection. Perfect for recharging these cams on the go, as they connect via USB. You could go as long as you like, providing you have the memory