This is a remix of Spradlinb's Minecraft Mini Creeper (https://www.printables.com/model/18110-minecraft-mini-creeper). Just added a ball-joint connector on the body so that the head can swivel as you like. Made this to be printed as gifts for some friends. 
 

4 head types are added:

• Head-snapon.stl - default head 
• Head-snaponface.stl - slots added for printing the EyesMouthv3.stl in a different color
• Head-snaponkeychain.stl - slot added at the upper rear of the head for keychains
• Head-snaponkeychainface.stl - a combination of both Head-snaponface.stl and Head-snaponkeychain.stl

Note:  For heads with face in the filename, you can print the EyesMouthv3.stl for coloring the eyes and mouth. You may need to hammer them onto the slots on the face. Just be careful though, the eyes are too small and are easy to lose.