For moon clipped .45ACP I've found a pint freezer bag holds 8 clips just right. Load data goes on the bag in the space provided.
Loose rounds go in cardboard if I've been able to scrounge any out of the range trash.
Or loose in freezer bags. Or in plastic cases. Whatever I have at the time.
.357 go in plastic cases. I don't really have the volume of those as I do the .45......... Yet!