I enjoy having a little food storage around. Nothing fancy, and not too detailed or whatnot. But when I purchase things like rice, sugar, beans, etc., I want to be able to store them in smaller packs that are handy, and that you can see. In comes the empty milk jug. I clean it out with hot water, a little dawn and a little white vinegar, rinse it really well, then set it on it's side in a cabinet to dry out for about a week to make sure there is no moisture in it. Then I fill it with whatever I'm wanting to store, label it with contents and date, cover the top with plastic wrap and a rubber band, then put the little plastic top back on it. If I have silica gel packs from other household items I have purchased, I put one of those on top. These are easy to work with and hold about 4lbs of dry items. You can see through them somewhat, and they have a helpful handle. Best of all, they are already around and every one that gets reused stays out of a landfill.
Words to the wise. Milk jugs are great for short term storage of lots of things, but I would not recommend them for long term storage. they are not intended for use in the types of food storage that people don't use for 10 years. I also would never put anything liquid or semi liquid in them. Pretty much anything that has moisture, I would avoid. Just dry stuff. And if you don't want to use them for food, you can use them for your powdered items like laundry soap, dishwasher soap, kitty litter, epsom salts, beads, lego's, etc.
Use your imagination, and use your head. Happy Storage!