I hit one of my old logitech keyboards hard enough that a few of the keys popped off. They were easily reconnected though.
Punched a hole in my wall. Took two hits. 1 hit was for one incident, then like an hour later, I hit it again in the same spot and my fist broke through.
I've also thrown my wavebird across the room.
I get very mad when my internet disconnects when I'm playing a game (I have the shittiest ISP in the world). I got home today at 4:15 PM. I was playing some TF2 by 4:30. By my count, at 5:15, my internet had dropped 7 times. I've broken a modem or two (have a backup though) by "handling" them roughly (IE throwing them against the wall.)