AAA to AA battery adapter
thingiverse
I wanted to use my rechargeable AAA batteries for my Oculus Quest controllers because they eat batteries like no tomorrow. I found the adapter file at https://www.thingiverse.com/thing:1917326/files and since it was a scad file it was easy to modify, so I tried to go for a look similar to https://www.thingiverse.com/thing:3665266 because I thought it would look better and save on material. Turns out the gaps didn't really save on material because there were still supports and it took just as long as it would have to print it solid. But it does look cool.
With this file you will be able to print AAA to AA battery adapter with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on AAA to AA battery adapter.