Probably the best thing to do is to have carpet or put a tough rug by the speakers. They’ll use that instead if they fail to use scratching posts. This will be better for room acoustics anyway.
You could also cut out and tape pizza boxes over the grill until they’ve become acclimated to ignoring the speakers. I generally use the most oily and ugly pieces just for kicks.
I’d be more careful of cables
Excellent point that’s easily missed.
The one real issue for me is with speakers that are easy to tip over.
Another excellent point. I’ve have a number of busted tower + bookshelf cabinets and drivers.

