This is a table with sand, where a steel ball is 'pushed' by magnets underneath to 'cut' paths in the sand in multiple patterns.

There's a 'mini' version of this currently on Kickstarter.
Yeah I was also advertised this and I want one. I’m trying to decide between a small virtual pinball cabinet or one of those. Leaning towards one of those, small table sized. I don’t have anywhere to put the small Kickstarter version. And the coffee table size is too big for my space.
I’ll let you know if I end up getting one. I think I might. The time lapse gif is cool, but I think it’s cooler seeing the steel ball move around on its own.