Mine aren't clear, but a fellow on our local Freecycle works in a restaurant and offered as many large buckets with lids as we want. They're 13-lire, tall rectangular bin that margarine comes in, so food-safe. I store my bags of rice and flour in them.

I got some nice square ones at Cash & Carry.

Also have a boatload of tupperware modular mates that I got years ago when a friend talked me into having a party and I would up with more t.ware than I ever wanted, lol. They stack nicely, but the largest one only holds 15 lbs.

We store wheat in gallon ziplocs in square olive containers that stack...they're about five gallons. We got those atEagle Peak Containers.

For smaller amounts I use glass gallon pickle jars...not stackable, but a double row fits perfectly on one of my pantry shelves.

Check your local grocery store bakery department. Several years ago I asked about the large containers icing comes in. I was given 2 of them and I store 25 pounds of flour in each.

I practice home food storage, including hundreds and hundreds of pounds of grains/seeds/beans. I vacuum-seal dry goods in canning jars using a FoodSaver vacuum sealer and the jar attachment, and store them on shelves in the food storage room in the basement. Wheat, and similar grains purchased in large quantities are vacuum-sealed in FoodSaver bags in 5-pound amounts and stored in the basement on steel shelves in plastic storage containers (with a flat flip-top lid). Storing dry goods in mylar bags is also a good method since it's oxygen-free. The oxygen-free (vacuum-sealed) method insures you don't get an infestation of insects, and it also insures much longer storage time. You can also use canning jars with oxygen absorbers if you don't have a FoodSaver.

You need to avoid 5 things with bulk food storage:
1. Heat
2. Light
3. Moisture
4. Oxygen
5. Insect Infestation

Having practiced food storage since the 1980's and incorporating vacuum-sealing using jars and bags, I've never had an insect infestation.

***It is suggested to avoid recycled plastic pails that may have had anything containing fat in it (like the pails that had icing in them). The fat can't always be removed because it bonds with the plastic. During storage the bonded fat can become rancid and affect the stored items in the pail. There isn't a degreaser that can remove the fat that has bonded to the plastic.

As already mentioned, there are lidded food storage containers of a wide variety of sizes and shapes from restaurant supply stores. I've tried many of them, but always went back to glass canning jars. I much prefer glass over plastic. Plastic will absorb odors, and fats from foods will bond with the plastic.

When I move a canning jar of food from the food storage room to the kitchen it goes into the pantry and onto a wire shelf. I have my shelves placed so I load a 1/2-gallon or quart jar onto them on the jar's side so the top/lid is showing. The regular canning lid (which was vacuum-sealed) has been replaced with a canning lid that has been spray-painted with chalkboard paint and a canning ring. Using chalk (I actually like to use Bistro Liquid Chalk Markers in bright colors on the chalkboard lids) I write the contents of the jar, and any other information I might want. Using the horizontal storage method for canning jars takes up a lot less space than storing them upright, and you don't have them 2 or 3 jars deep on a shelf. You can quickly identify what's in the jar because the lid is showing. I can also vacuum-seal chalkboard lids to the jars, if necessary.

Just an addition to what grainlady said: half gallon canning jars are very useful, but sometimes hard to find. They're available online, but shipping will kill you. If you go to your local True Value hardware, they will order some for you and you don't have to pay shipping-they'll just throw them on the truck for the next supply order. You can also order them online from True Value and have them delivered to your local store, but the local franchisee doesn't get any benefit from that, and I try to support the locals. The half gallon jars are also useful for fermentation containers for sauerkraut.