@helplessduck Project Source (which is just a rebranded Hefty AFAICT) clear plastic tubs like https://www.lowes.com/pd/Project-Source-Small-3-75-Gallons-15-Quart-Clear-White-Tote-with-Latching-Lid/5013948515 Mostly because the ridges on the top force smaller sizes to line up and prevent shifting, latches to keep it from spilling, and clear sides because it makes it easier to figure out what's inside. And all the sizes fit together with the lids, so I can mix-and match small, medium, and large to handle my box of heads to the kilograms of white bricks I got from Star Wars.