I like to design symbols from things I read in CAD software. (Wow, that sounds nerdy even for me!)
I designed a few different “Five-Fingered Hand of Eris” symbols from Principia Discordia, one with a longer middle than the other. Both have a hole for a chain.
I posted the Five-Fingered Hand of Eris files over at Thingiverse.
Hail Eris. The Goddess Prevails!