For as silly as it sounds, one of the true banes of my existence is buying new batteries. They always seem to run down at the absolute worst time - when you simply cannot get somewhere to get new ones, when you absolutely can't do whatever it is you need to get done without them working, etc.
So I have made the switch to rechargeable batteries. I have been saying I was going to for years now (just like the low-energy lightbulbs), but kept putting it off for one reason or another. Well, no longer.
No more walking those long three feet to the TV set, no more cursing the camera; with rechargeable batteries, you no longer have any excuse not to do the things you always wanted to do but never had batteries for when the opportunity arose. And they're good for the environment - so everybody wins!