Just added a couple of lugs and sockets in the base of three models. Also slightly reprofiled the cut outs to remove the extreme overhang when printing.

Added a solid wall and base version for loose bits-n-bobs.

Added a solid lid to match the solid wall version, of course only need one per stack.

AAA Battery holder

AA Battery holder

Other designs - just scale uniformly in your slicer to create whatever size you need

Open Crate

Solid Crate (new)

Lid (new) -