This is an accessory add-on for the excellent Tea Light Display by JamesThePrinter available here.
I'm going to give some of these Tea Light Displays as gifts and will include extra scenes and batteries. I can see these displays getting used more if the spare scenes and batteries are readily available, rather than tucked away in a drawer somewhere. So, I designed a holder to add on the back of the tea light display case; it can be glued on, or attached with some transfer tape as I did. I used 3M 200MP adhesive transfer tape. The original profile has a holder with capacity for 5 scenes and 3 batteries.
Edit: Dec 6, 2023 added a second profile for more/thicker scene capacity, and with option to choose brim or no brim.