Growing up I had a marble track. I was obsessed with watching where the bends and curves took my little cat eyes. I could mix and match the pieces and create all sorts of shapes, but never in my wildest dreams did I ever think about having a handmade track that circled my entire bedroom! Want to see it in action?
Instructables user (and superstar Dad of the year!) Steve Moseley built this complete marble track that graces the walls of his son's room. It's a continuous strip that repeats over and over again until it's turned off. The installation runs off gears, a few small motors and battery packs that were all ordered online.
Although we're not sure it's something that would make going to sleep easy, you would easily be the coolest kid on the block. Steve gives lots of great tips for making something like this on your own (even if it's not to the same scale) over at Instructables so make sure to check it out!