Mine - I have two of these.
https://www.walmart.com/ip/PLANO-SHOOTERS-TWO-TRAYS-SHOOTER-S-CASE-PORTABLE-PLASTIC-CAMO/4303560One for supporting multiple Knights with 209 ignition in .50 caliber, pellets, and sabot loads.
Top tray is loaders, ramrod tips, small Allen tools and the more needed "at hand" items.
Second tray is breech plugs, sight tools, all of the long breech plug tools, the "may need" pile.
Bottom storage is large items, pellet boxes, cleaners, rags, plugs, patches whatever doesn't fit on the trays.
Second one for "other muzzleloaders" ranging from .45 to .54 and across multiple brands.