I made these a while ago and really never did much with them, I decided to give them a proper paint job, gloss them up and now I'm going to offer up some Zombie Head Magnets for sale as part of the Moonshine of the Damned Fund Raiser.
The Brain Keychain and Zombie Head Magnet combo is being sold for $15, only 10 sets are available. The Zombie Head Magnet is made of the same resin as the Brain and given a gloss coating as well, and the magnet is a pretty strong as well.
Or, you can just get yourself a Zombie Head Magnet by itself for $10 as well, there's only 20 being made. They're all hand painted and the dye for the resin is mixed by hand as well, so there's a bit of variety to the colours, but I'm trying to keep them as close as possible - you can see they're all various shades of greenish though.
You can email me firstname.lastname@example.org if you'd like one.