In addition to playing with chemicals to make fembots and 3D printing, Kurt was a fan of optics and telescope mirrors. He made a 4x4x3 projection table using a couple mirrors from a National Geographic projection TV. Niels used it to project D&D maps for miniatures to sit on. …
He loved 3D glasses, VR headsets, and holographs, magnets and other toys.
He liked gadgets like this weird binary clock:
Binary Clock I never could tell what time it was and had no patience to learn how to suss it out but this was normal for him.