Child Damage Mitigation

Invert your thinking. Literally. Consider ceiling mounting your maggies. Same location as now, just hang them from the ceiling. I my last house, the perfect location for the speakers would have also destroyed a beautiful view and much of the utility of the room. Solution was to hang them from the ceiling. Admittedly the soundstage was elevated, but otherwise they sounded fabulous. Just be sure to hit for ceiling joists with your mounts, and run the speaker wires through the ceiling, and down the inside of the walls to your amp. 

I had Magneplanar Tympani IVs when my kids were babies/toddlers. These were probably no more stable than your 3.7s. I never had a problem (at least with the kids...the cats were another story). 

Congrats on the little one.  My four year old is number six and more rambunctious than her four older brothers ever were. 

Over the years I've found that what works best with children is giving them lots and lots of attention and not sweating the small stuff.  For example any messing about with power outlets, the stove or my speakers was a resounding "NO!"  Whereas the electronics, the refrigerator or certain furniture, while off-limits didn't get the DEFCON-1 treatment.

By keeping it simple, the kids always know where they stand.

Mark

@glubson,

Nope, as Mark said it just takes teaching kids their limits. It’s not perfect, but it’s good most of the time. Raising our daughter we never removed things just so she couldn’t get her hands on them, we taught her what she could touch, or not. Just like the grandkids. It’s not a matter of being heavy handed, it’s simply a matter of teaching the kids (god forbid) boundaries. 

Watching a toddler is like nailing Jello to a tree. My daughter liked to "adjust" the settings on my subwoofer in my home theater system. I just made sure I wrote down what they were so I could put them back. Still have the same system now. She will be graduating from college soon. She is doing very well. My 25 year old ht system works just fine too.