This is a miniature “stubby” lightsaber lamp. It is made to be used with a tea light. My tea lights were a little larger so I had to take the outer case off of it (with a flathead screwdriver - very easy to do). Then I glued the tea light to the bottom of the energy beam (see pics).

It is best to print the “energy beam” in PETG since it is more transparent than PLA. It is designed to be only 2 layers (1mm) thick. You can try it in vase-mode but I dont think it'll print the top of the dome very well.   

The base/handle can be printed in PLA, and if you download the raw files, you can add pauses to print in different colors, or use your AMS if you have one.

Once printed, the “energy beam” slides into the lightsaber base/handle.