Please, DON'T TOUCH

this is a hard thing to do! Having 2 boys less than 6 yrs old that are curious kittens, I can empathize w/ your situation. Little boys love buttons to push! :-) The more, the merrier for them!

well, if you have speaker grills, then deploy for sure. They can protect the drivers unless the child does something drastic. You can also mark the speaker position on the carpet w/ tape. Then move the speaker against the wall w/ the drivers pointing into the wall i.e. the child can only play w/ the speaker binding posts. This ain't so bad.
Another thing you can do is, unplug the equipment so that it does not respond to the button push. The little fingers want to push the buttons & see the equipment light up. when it doesn't (it's unplugged) their enthusiasm wanes rapidly & they leave that equipment alone. Also, know that buttons on stereo equipment are designed for many pushes before it actually fails.
3rdly, if you have spare bedsheets, thrown them over the gear (much like you would over furniture when you paint the walls).
FWIW.

this interesting question & its answers/suggestions by the various members certainly brings to light the attitudes of citizens of the Western world - material wealth reigns supreme & human relationships are -w-a-y- behind! A country filled w/ such poor people! :-(

Theo, Chadlinz,

I have lived in Germany, my home country & now the USA. Spent a -l-o-t- of time in Western Europe. If I add up the years spent in the Western world & in my home country, it works out to be a 50-50 split. With that experience in mind, I wrote my original comment. I did not pass my comments by merely reading "what we read on a website forum".
The suggestions made by people here are EXACTLY what I wrote in my original post. It mirrors the society at-large even tho the sample in this thread is really very small.
FWIW.

Hi Seandtaylor99,
you seem to be the only one to openly acknowledge this. The others seem confrontational &/or in denial (to various degrees). Yes, this audio gear is expensive. Yes, this audio gear is expensive to fix if it breaks accidently or otherwise. Yes, this audio is our obsession. But, hell, don't put a piece of eye-candy metal above a human relationship! That's all I'm saying. Put the whole thing in perspective & realize what's of higher importance (it's not audio gear!).

It is true that advertising here is very, very strong & they get you when you are very young & condition you to give material wealth the highest pedestal. Somewhere along the line, I hope, that mature adults will be able to keep that advertising influence in check. Maybe this is occuring but at not a high enough rate?