The Mystery Boxes have been selling out lately, so I got some ANTOTEN 5V LED Puck Lights (2 for $10 from https://www.amazon.com/gp/product/B09R18WZ25/) and modified the base to accomodate feeding the light's larger switch and wider cord through the base. I also didn't see the need for having two switch/cord holes in the base.
Should work with any of the myriad of 60mm LED puck lights that can be found online.
STEP file included if changes are needed to accomodate special cases.