Well, I'm pretty careful with electronic devices, so I haven't had to deal a lot with something breaking because of physical damage, but I have had quite a few things that went kaput because of something funky going on with the wiring or computer chip or whatever else is inside those things.

Most notably:

A PS2 controller's triangle button and shoulder buttons just suddenly stopped working

An alarm clock that doesn't sound an alarm anymore to wake me up. It still makes for a good clock though.

The cord on my Sensor bar for my Wii got eaten through by my cat (that constitutes as physical damage though, but not of my own doing.)

The light on my iPod dock wouldn't turn off anymore. Idk what was up with that.

And finally, two laptop chargers.