When your working on a bench at the range patterning in the ML SG you have ample room to spread everything out. Not very practical in the field/woods though. Speaking about "El cheapo" aka: free
Stop at your local pharmacy and pick up a few. Of course you need to verify first powder grains and shot weight. The one I will carry is a 7 with shot in 3 power in 3 and primers in the center. Easy to carry and find in your go bag or cargo pocket. They are designed to store meds so moisture proof (not water proof), sure "will keep your powder dry" for a couple of days. Working on the chemistry to bond a pellet (now we'll have it)
Now to get rid of the funnel issue
Works for me, let me know what you think.