Plastic containers and plastic freezer bags are really good to have, especially if you bought a bunch of rice, flour, beans, sugar. etc. Problem with bulk grains and ingredients is storage space and the inevitable attraction of insects and other pests. Plastic containers help keep mice and bugs out of your non-canned food supplies. (don't let your food supplies become pest food)
Bulk items like rice and flour can be stored in lidded 5 gallon buckets or smaller gallon sized buckets. For those of you who lift and buy protein powder, save those tubs! I store smaller batches of beans, brown rice, lentils, etc in old protein powder tubs. Dollar Tree also has some really decent round gallon and smaller sized large mouth screw top containers for a buck.
If you can, start looking at diy shelving and containers to reduce clutter and open up storage space. Preferably somewhere that's dark and/or maintains a stable ambient temperature year round. Stackable square or rectangular clear containers are great for reducing clutter and storing things like small batteries, cables, tape, etc.
With things going the way they are, people are going to start feeling an economic pinch. While it sounds silly, try looking at what you throw away more carefully and if you can reuse it. Manufacturing goods are liable to get more costly as factories shift outta china so try to keep what you have in good repair, because replacing something may not be viable.
Another thing is to start budgeting. Luxuries that would go toward things like booze, tobacco, etc, might be better put in savings or can go toward getting a brew kit set up. If you do drink, save your bottles. Bottles can be sterilized and recapped if you go the brewing route.
These next few months are going to suck for alot of people, but if we play things smartly it won't be so bad.