You can always build a fake floor and install wall to wall carpeting or something of similar material to it to demonstrate.
This article is from 2013 but evidently they sell a lot of shag carpet styles to use in kids' rooms: https://retrorenovation.com/2013/10/24/find-colorful-shag-carpeting-today/
....or use it as an amazing back scratcher! (Or if you have cats I'm sure screwing one to a wall would make them go wild with it) lol
[ATTACH=full]126074[/ATTACH]