Not to try and compete with shadowking's really cool
Elder Thing and penguins, but I recently decided to have one of my sporadic kicks at the sculpting can and make an Elder Thing. Id only recently finished the At The Mountains of Madness
audio book and was struck by the narrator's sympathy for beings I'd previously lumped in as just another Lovecraftian horror.
I don't know what the device its holding is, it could be a weapon or just a musical instrument, but since ET's are supposedly highly intelligent I thought it could use something signifying that.