AA-AAA Battery Holder/Dispenser with Wall Mounting Holes
This is a remix of the popular "Battery Dispenser Dual" thing by fafabienman. I wanted to give him credit but the site won't let me add his model as the source.
I added keyhole slots for wall mounting with #6 screws (the slots will allow use of screws with a head diameter of less than 7mm and a thread/shank diameter of less than 3.5mm. The head diameter must be more than 3.5mm.
You put batteries in the top like a hopper. A battery can be picked up from the tray (like a restaurant straw dispenser) and another battery will roll down the internal ramp, ready to be picked up.
I printed in PETG on a Prusa MK4 printer with the default 0.20 Speed settings.