I think I touched on this in another thread, but you know something I actually hate about lighted Christmas decorations? Having the change the batteries constantly!
Okay, I've actually let up on the battery changing this year, but here's what really irks me: everytime you put fresh batteries into the decorations, the whole thing works just fine... for two days (no exaggeration), then the blue lights are the first to die. It's always the blue light that dies first. I have a Peanuts piece that's a little retro-style TV set with a scene inside of Linus, Lucy, Snoopy, Charlie Brown, and Sally standing around a Christmas tree, and it has two modes: just lights, or lights and music (an endless loop of "Linus and Lucy"), but I just keep it on just lights. Four different colored lights light it up inside: red, blue, yellow, and green. The blue ALWAYS dies first, and like I say, it'll die after two days of battery change, which is why I'm not bothering to change the batteries as often this year. The green light starts to die after a couple of weeks or so, then the yellow starts to dim around the time the green dies out (and the music doesn't play by then). Similarly, I have this little light-up snowglobe thingy with a fiber-optic tree inside, it continually fade from blue to red to yellow... same story, blue dies first, then yellow will fizzle out. I don't even know what kind of batteries it takes (I think it takes similarto watch batteries). But still, ALWAYS blue dies first. Always blue.
On a side note, it's a good thing I get a 48-pack of AAs at Sam's every other year or so, as practically every single thing I own that's battery powered takes AAs: TV remote, cable remote, DVD remote, CD player, Christmas decorations, Halloween decorations, etc.