Blackmoor Dungeon "Reanimator" miniature?

[Havard]

Slim Godier just posted the following on the Blackmoor Fans Facebook group:

I am converting the Reanimator to 5e D&D as I might be needing to use them soon. Is there anything out there that would work for a miniature/terrain piece? Description from Dungeons of Castle Blackmoor pg 10 "The creature appears to be a glowing green crystalline heart pulsing with eldritch energies. It is surrounded by a hard shell of bone fragments drawn from numerous corpses." If nothing is out there that comes even remotely close to representing this creature/thing. I will just use some different woodsies, a small round on top of a cylinder. Paint the round sickly green and the cylinder bone color. And for the bone shell just lean some skeleton minis on it.

Anyone have suggestions for Slim?

-Havard