Build it. There is a global market of parents who will buy it.
But on the other hand, why not accept the toys on the floor? You are fighting entropy for no reason. You sleep at night, you will work tomorrow during the day, and when you look again, the toys are in an equally dispersed state. Why not let them stay in that state for days until you need to hover?
Perhaps you've not yet reached an age where you frequently need to get up to pee in the night (sometimes several times) and keep the lights off to avoid disturbing a sleeping partner... ;)
Do you walk heel or toe first [1]? I would assume that lego bricks only hurt when moving heel first since humans had to deal with stony environments for quite some time. Not that you should stop cleaning up but this could be another technology to deal with the bricks.
Technically it isn't. Life needs entropy for variations and evolution. Also, life doesn't fight. It's identities that fight to maintain themselves. Life just keeps on living.
But on the other hand, why not accept the toys on the floor? You are fighting entropy for no reason. You sleep at night, you will work tomorrow during the day, and when you look again, the toys are in an equally dispersed state. Why not let them stay in that state for days until you need to hover?