[namibj]

For storage bins/boxes, I can recommended getting a couple KLT (Kleinladungsträger). It's an industry norm from the German automobile parts manufacturers, who use it for highly automated parts handling. They're ~8$ each for the large 60x40x28cm kind, have a reinforced (grid-structure) floor and they are strong. They easily stack to >100kg (not per-box though, which is rated at iirc ~35kg (edit: 20kg)), and have a slot for a DIN-A5 sheet on one long and one short side. They're ~2.8kg injection-moulded polypropylene, and thus survive quite aggressive chemical cleaning and boiling water. You're not supposed to fill them, but I'd guess you could do it anyways (e.g., filling with warm/hot water for soaking) if otherwise unloaded and resting on flat surface. It would contain ~60l, and thus almost twice the design load, but these are robust. I climb on them in storage, and the major risk is bending a wall outwards and then breaking it by inducing that bending load with the weight on my foot.

TL;DR: buy industrial boxes. Proper German KLT https://en.m.wikipedia.org/wiki/Euro_container are really nice. I recommend R-KLT in blue (they don't look as bland as the grey ones).

[karatestomp]

Googled them, and those look like the old-school consumer ones (or a little tougher, even).

You know what? I wish Amazon had really durable boxes, like these but maybe even a bit sturdier, that you could add to an order, used as the shipping container for the rest of the stuff you ordered but also intended for re-use after arrival.

[namibj]

There are reusable shipping boxes made from similar materials. Those don't work as well with a robot, however.

I do still plan to get a lifting arm/manually-operated crane. It would be nice to not have to lift them with my spine, and these are made for reliably grabbing by a robot. Both from the sides and even from the top (when tightly packed).

(There are 4 access holes on the top that go down next to the grips on the short sides. A grabber uses one hook each to lock the box when unloading e.g. a pallet.)

You should be able to order from a company like Auer Packaging or a local alternative. Thankfully these are specified precisely, so manufacturers can't cheat on stability to save materials.

They actually recycle well, btw. When broken/used-up, they'll get shredded and turned back into new boxes. It works because they're pure PP and only one of a few fixed colors.