Keeping track of your airguns.

Lots of good ideas but what if you have 100+ airguns? Do you have a ditty box for each?
I built a shelf under my shooting bench with assorted tins of pellets. Many guns use the same and some use unique.
But, I don't travel to shoot. Most all my shooting is from my bench at my home range.
I do have a "to go" bag if I go to the farm to shoot pest birds but I just put in it what I need for the gun of choice. The list will help remember those needed items.
Thank GOD I only have 2, simple journal works for me along with a magnifying glass to read the gauge😂