Gridfinity Go! AA Battery Holder with snap-shut lid.

Holds 4 AA batteries, plus a CR2032 because there was extra space.

Prints without support, filament holes shouldn't need cleanup(They are 2.2mm) but some lid files in some sizes might need some reaming on some printers.

Does NOT have the magnet holes on the bottom, like most of my other Gridfinity Go! boxes, but otherwise has a standard base.
 

Requires a 1x1 lid like the 116ChunkyLid from here:
https://www.printables.com/model/479851-gridfinty-go-boxes-with-filament-pin-latch

But other lid styles are available.