That's funny Matt. I have a Sanus rack in a tower configuration so my AVR, Oppo disk player, and turntable are up out of my daughter's way (she's almost two and a half, very tall for her age, fearless, and completely convinced that the world is her oyster).
So far, the Sanus tower-style rack keeps her out of the gear, but it's the media that drives me to distraction. We have a pretty good child-proof lock on the media cabinet, but it's full now, and we need to get another one. Unfortunately, we're still accumulating media, so there's definitely overflow, and my daughter is convinced that CDs and DVDs need to be carried by syrupy hands.