I use these:
Smaller ones fit in the bag, larger ones fit in the shooting box.
Top left is sold by track, as are the 2 middle right ones, same as Taylor's for the one
on the right, middle row. The others are various boxes, Sucrets tin & air-rifle pellet boxes too
with screw-top lids. Forgot to include the JSB pellet tins which have simple push on lids.
I really like the round one, top left - Trackofthewolf for my .69 patches. Right now, it has 16 bore balls in it.(.662")