Right now it's in they hypothetical stage but I am in discussion with a small group of people wanting a quad of custom figure heads. At present there is no way in any type of Hell I could do the casting or 3D printing.
They would need to be in a solid color of paintable plastic, preferably a caucasian skin tone, with a hole in the neck for a male plug. All four at once as it would be a set. Not intended for children.
If you do this type of work and can give me an estimate how much it might be, how many sets would need to be made to make it reasonable, etc please let me know so I can pass the information on.