IKEA 365+

https://www.ikea.com/gb/en/collectio...owsable%3A1%29

have about 10 in circulation for the last 10 years. Every now and then I grab a few as they get lost stolen/broken.

glass ones are nice for the fridge/freezer so you can see into them.

i like the plastic ones with insert for an actual lunch on the bike.

can't beet them and everyone over here uses them. sometimes they get lost as we have dishwasher facilities at work and a rota and there's get a few of them in the machines.