I like using different color boxes for different calibers; however, I seem to keep buying bullets, primers and powder instead of adding to my "store bought" Berry’s ammo boxes.
I find myself scarfing up every empty Tula pistol box/tray I see at the range. The Tula trays are compact. If I want to load 5 rounds, I just slip the tray out and dump one row, 10 rounds – dump two rows, etc. I write my load information on the back of old business cards and tape the cards to the box. Since I don’t normally buy Tula ammo (I do use some of their primers), I know the Tula boxes, on the shelf(s) are reloads.
A lack of planning on your part does not necessarily constitute an emergency on my part.