The Spacewarp 5000 from ThinkGeek is a DIY “perpetual motion steel ball roller coaster [that] recreates the classic 80’s toy.” Video after the break. Click here for one more picture.
You do need to cut the track to the proper length for each section with scissors and measurements are only provided in metric. We do warn you however that you will need some time to assemble your Spacewarp 5000 and get each track segment correct so the balls stay on the track properly.
[via ThinkGeek]