Something like this for rice
I use something similar but it’s circular with four straight parts for flaps, never have a problem and keep a cup scoop in it.
Growing up we had a stone circular bin that had a top that you just set down with some wood leads to keep it in place, no latch that extended out and doubled as a small table. It could easily hold more than a big bag of rice.
Sure. I am very happy with the sizes.