Gridfinity AAA 9V Battery Storage

I have kids at home, and with that a ton of toys that needs batteries, of all size and shapes. The existing models for storing batteries were always not enough for me.So I made a bigger one that is also compatible with the gridfinity system and stackable. It can also be stand alone boxes for storing batteries.This model is for AAA and 9V batteries. It can store 60 AAA and 8 9V batteries If you need some for AA, check it out here: Gridfinity AA You don't need the gridfinity bases to use these