holiday lights... just add LED and clear glue.
Need a sims xtal for you mini fig?

This should fit the brick stud. Adjust the scale depending on the printer.

Added the Sims like 6 sided crystal... a bit large so
Added the Small 6 sided crystal for minifigs

MakerBot

MakerBot Replicator 2

No

No

0.2 mm or better

make sure it builds with no infill and 1 wall thick in the crystal volume. I use buildtak, if you don't you might need a raft.