Is there a name for those little dishes that have a curved inner that ive seen used for figures heads to keep the back rounded when applying pressure.

I know exactly what you mean but can't think of what they're called, but if not, could you maybe try a paint mixing tray? The ones with several little dips in them?

Or if not, is this what you mean?

http://www.cakecraftworld.co.uk/viewproddetails.asp?pc=CELFORMERS

Paint mixing trays? Google it under "images" and see if that is what you want.

I managed to find out 'former' its called