Show HN: Light up the toes at your next party (toeglo.com)

Also be useful to see if your floor is properly flat. Might be lighting up some ankles or the floor if not. <grin>

This would only work in a sparse dance-floor. I thought this project somehow magically solved the problem that I immediately thought of upon seeing it, but no. It's literally just blasting a laser across the floor. Step into the beam, and it's blocked to everything behind you.