I'm sitting here listening to my 3-year-old fridge rattle. Reason it's rattling is, every time there's a power failure, the drain freezes up, and unless we disassemble the whole thing and take a hair dryer and boiling water to it, the freezer will fill up with water from the drain. Of course nothing that's plastic and popped together ever goes back together exactly the same way. Ergo the rattle.

OTOH, I bought a new belt for my 11-year-old washer, which I'm pretty sure is all it needs, and haven't got around to installing it yet.