wow, very cool! this maybe a bit of synchronicity, but one of the folks i made some orgonite devices asked if i could put a symbol into is chargine plate.
http://www.reikiliving.com/Karuna%20Reiki%20Symbols.htm he asked for the Usui Dai Ko Myo. i recognized at least one that might interest you on that link. i have also seen the one in the middle recently too, i will try to find the source again and pass it on.