I know your concern. I have a 2.5yr old and an 8 yr old. I get a little concerned when they get close to my m80's. The thought of them pushing in a woofer dome cap (which they have done before), or tipping the speakers over is a worry.

For the most part I've been able to keep a serious voice and face so they know to stay away.

I guess you could always use bungey chords or duct tape.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85