Hmm. With my PowerBook, I haven't really had any accidents. The worst thing that's happened to it is the power adaptor started fraying at the power connector, so I don't use the PowerBook anymore.
iPods, however, are a different story.
The third iPod I had was my one that i beat the ever-living hell out of. I dropped it countless times, and when I was at a school dance it flew out of my pocket at mach 3, hit the ground and split wide open. Of course, I swore quite loudly(this was a Catholic school with teachers around, mind you) and started flipping out. I guess a few tabs must have broken or something, because from taht point on it was very easy to split it open, and finally another time I dropped it, the fall managed to sever the hard drive cable. Not good.
And finally, with a school MacBook, I was demonstrating just how easy it was to remove the hard drive and RAM from them. I took the RAM out, no problem. Took the hard drive out and put it back in. Again, no problem. Put the RAM back in. Problem. It wouldn't seat in the slot. Took some clever maneuvering with a credit card and the padding around the L bracket to get it to work, and I'm willing to bet it's still not seated correctly.