Paper: worked pretty nicely. We found that if the magnets are in more stacks, spreading the surface area, it amplifies better than in one high stack. Wood. Not so great, it absorbed too much of the waves.  Glitter acrylic. It should be good because it is glitter. It is not, which makes us angry.

Fingernail. Conductive paint on the fingernail. We were REALLY excited about the possibility of this working. It didn’t. Our dreams are demolished. We’re thinking about rings now.