Very Simple Compact Battery Holders

Edited 2.7.18.Added AA version with tapered walls to take greater range of battery diameters. Still working on AAA taper version.

3.7.18 AAA taper walls version added. Should fit most batteries now. If not, adjust by scaling up or down.

Apparently there is a risk of fire if batteries are not stored properly. I was sorting all my batteries and decided I needed something to properly store them.
I designed these simple bands and then checked to see if there were any design already uploaded.