These are various skulls in smooth and low poly. They can be used for a keychain, lights, bracelets/necklaces or simply as a reminder of your mortality. They obviously work nicely as a Halloween decoration as well.
This is a remix of my Skeleton: http://www.thingiverse.com/thing:644370
All except Skull-Smooth-RoundedBack.stl print without support.
For a Light: Skull-LowPoly-Hollow.stl
For a keychain: All work except the hollow one, 80% size is recommended
For a bracelet/necklace: Same as above but a size of 50% is recommended. Print a bunch then put a elastic band or any other band you like through the holes in the back.
There are optional eyes you can put in with some force. There are also optional Iris parts but they might only work when printed bigger since they are so tiny. Beware, you might not get the eyes back out once pushed in.