LEGO compatible two head adapter for standard minifig

thingiverse

This new neck allows you to attach two LEGO heads to standard torsos, instead of one. In this way, completely new LEGO characters can be created, including aliens, demons, monsters and two-headed ogres. There are two different versions, but they only differ minimally in texture, Two_head_adapter_LEGO.stl is the left one in picture number 4, Two_head_adapter_LEGO_plain.stl is the right one. As a suggestion for further ideas, you could give the minifigures four arms (LEGO created more than one piece for this purpose) or you could stack the adapter to build four-headed characters. Please note that in this case the two outer heads would be horizontal at right angles. Or you can use two heads with only one eye each, similar to these on LEGO Cyclops figures or Mixels. Hope you enjoy.