We go through SO many batteries in our household. It seems like most all of Layla’s toys require batteries, but thankfully they seem to last a while. Our wiimote charging dock/battery packs died recently, so we use plenty of batteries in that department. I also have an external flash for my DSLR that eats through them pretty quickly. If it weren’t for the fact that most of these things require different sizes, I would stock up on re-chargables. I think I will get some AA rechargables for my flash and wiimotes, and hold off on chargers for Layla’s toys as we haven’t really had to replace them in ages!