Clearly, you can use them as a foot rest
Image via Making it Lovely
They can double as a coffee table...
Image via Apartment Therapy
...or end tables
Image via A' la Mode
They look great in the bedroom too!
Image via Cape 27
Anyways, my thinking is that they would work great with the kids. I mean, there are no sharp corners, it would not be a long fall if one were to tumble off, and my kids seem to enjoy shopping for them more than they do coffee tables. It is a win-win situation for all!