I was thinking of a secure and safe way to store batteries in my range bag for optics, flashlights, etc., and came up with this design. It holds four 2032s, four 1632s, and one 123 battery. The inner racks keep the flat batteries from touching and possibly shorting against each other, and make it easier to take out one battery at a time. The lid is a tight fit and won't come loose in your bag/pack.

I printed the case with Bambu PLA-CF for the texture more than anything else, the racks are PLA and print from a flat portion on the back without supports.

Enjoy,

Jimmy D