Childproof audio

Hiya!
Long-time reader, first-time poster.

The past year has seen the arrival in my home of sweet-sounding monitors on spiked stands, nice cabling, components... and an infant boy :-)

I hope someone can share their thoughts about childproofing a quality audio system in an average home.

Off the top of my head: Only buy grille-covered speakers. Somehow tether the speakers to prevent them getting knocked over.