Best of luck with the Be tweeter replacement.
Interesting stories from everyone. Myself, standing in front of some custom in-walls, circa late 80's, I was showing off my handywork to a colleague. As a very cool tweak, I'd placed/glued dozens of foam earplugs on end, in concentric rings surrounding the dome tweeter. As I'd come up with this idea on my own, I was proudly and enthusiastically explaining the supposed benefits of the anti-diffraction solution I'd come up with.
Well, after listening to my entire explanation, this guy sticks out his index finger, ... asking "what's this?", ... as he pushes in and damaging the soft dome tweeter. Yeah, a sober, otherwise high functioning 30 year old adult male, asking that question and doing that damage.
My wife and I never really baby proofed anything but chemicals and electrical outlets, fortunately we never encountered any mishaps with gear or otherwise. It is a nice common interest and area for bonding with my son. He's a teen now, and he's always been interested and involved with the system and DIY projects (my IB etc.).
Again, best of luck with the replacement piece. Some updates with pics of internals would be interesting too.