Razor has started selling a minimalistic skateboard. So minimalistic that it has only three wheels.
It’s small and light and designed to be carried about by students, I think.
Videos on Youtube indicate that it is possible, with some difficulty, to do many traditional skateboard tricks on a Sole Skate.
Given the apparent build quality, I wouldn’t expect to get away with those tricks for long. But in the meantime, this thing is probably worth the $20 it costs.