OK, I'll take a minute or 2... We started with an iMac G3, and Griffin was enjoying a freeware app called Bambini X, which is great because he can't do anything to crash the iMac while the App is running and it is interactive, but on a very primitive level. He killed the Pro mouse. We think he wanted to find out what the red light tastes like, since he was obsessed with touching and licking the L.E.D. on the bottom, and now it no longer works. Soon after getting the G5, we got a wireless mouse and it has a recharging dock, which we located out of easy reach for him. He just HAS to touch things on the screen, and wants to catch Curious George or Connie the Cow. Soemhow, he took a pencil to the screen recently. Although I was frantic about it, several cleanings with a microfiber cloth slightly moistened with clean water made the light pencil marks disappear. We do not allow him unsupervised access to the macs, but we know that the time is coming very soon when we will be taking greater pains to protect them. I leave both machines up and folding all the time, and they get a lot of use when we aren't sleeping.