Here's a useful couple of articles over at TNT-Audio about kid-proofing your audio rig so your little darling doesn't solder her fingers to your precious WE 300Bs. Here's a tip I'm sure you all do when your tweeter dome gets pinched like a zit:

...just put your mouth around the tweeter dome and...suck :-)

And make sure to do it with lots of people around. Check out the articles for a lot more useful (but not as exciting) ideas.

Kids and Hifi Survival Guide Part 1
Kids and Hifi Survival Guide Part 2