What's a dad to do?

I finally have a system that I've put together and love. The only catch is that my son is starting to walk, and as he explores I would rather relax than be worried about tubes blowing or speakers getting poked at.

I either need speakers that have limit access to drivers or a bookshelf that I can put out of reach but place on stands later.

I like soundstage and depth but I think it is more realistic to go for good tone. Placement will be less than perfect. Some speakers that I like are Verity, Spendor, Devore, intrigued by but never heard Reynaud, Audio Note, Proac, DeCappo.

Should I just go to big-box-mart? Please help if you can. under $1,500 used.

Thanks!