There's a post on Boing Boing with an incredibly cool video showing off Nissan's self-parking tech. They went to an inn in Japan and installed self-parking systems in some floor pillows, a TV remote on a table, and a whole row of slippers. Watching them all glide around, putting themselves away is surprisingly fun. :)
Thinking about it, though, you could put this tech in a lot of things. Heck, add some sort of flight tech (tiny little anti-grav units?) and your whole house could straighten itself up whenever you want. Decide where things should live and set each thing to home in on its spot, and there you go. Press a button, trigger an app, clap, (ask Alexa?) or whatever triggers it, and everything would go scuttling and gliding into its spot.
If you've ever had a little kid who'd never put their toys away (or been a little kid who hated putting their toys away [cough]) this'd be some serious dream tech. :D