From Brusspup:
This toy is based off of a toy called Sin that was designed by Peer Clahsen. It’s really quite simple to make and the illusion can be stunning. I added another set of 2 to see what type of effect I could get and I was surprised how cool it turned out. I sprayed the 4 version with UV paint and then used black lights. In the sideways sequence at the end, the illusion is spoiled a bit because you can see the glue. If you use use less glue, the effect would be better.