I've been in the fabric moratorium thread for a couple years now. I really try to not buy fabric but I still want to. Anyway, last couple of days I've been discussing my next organization push and just today, I bought a nice set of banker boxes from Costco. Going to set up a major sorting/organizing/reboxing project in the hallway after my trip next week. There's more about the process and a link to the boxes in this post:
2020 Fabric Moratorium
Those plastic salad bins certainly have many desirable qualities and I've used them as temporary project boxes before to keep stuff together while in process.