I can’t believe I spelled chandelier correctly. I’ve actually figured out how to make this work. I’ve seen lightweight opaque plastic balls before. All that would be necessary would be to drill two holes in the top of the ball and place an LED light powered by a watch battery. The whole thing could easily be suspended using fishing line. The whole light assembly would not weigh much and could be used with either tight fitting nipple clamps, piercings, or simply threaded through the nipples as part of a temporary piercing (friends of mine have done temp piercings with fishing line in the past).
Photoshop gave me the opportunity to represent the fishing line in white, and I’ve completely erased the lines for the globe and replaced it with a glowing light.
By the way, you can achieve colored rope one of two ways. Many BDSM stores carry colored rope. You can also dye rope using clothing dye.