Basically an insert to attach LED lights to.  I made it quick so that I could put simple LED puck lights in and manage the cables.   I didn't want to use a battery one, which would require changing.  LEDs came with sticky pads, which I connected directly to the ‘light tower.’  Base fits on top of the pegs on the base piece.

The LEDs have a remote to control the colors and has different settings.
https://www.amazon.com/dp/B011E5AUH2?psc=1&ref=ppx_yo2_dt_b_product_details