A simple container system that stacks, reheats, and does not require matching 47 mystery lids.
Pick one footprint
Containers that share the same lid footprint stack better and create less cabinet chaos. Buy multiples in one or two depths rather than a variety pack of unrelated shapes.
Glass versus plastic
Glass handles tomato sauce, reheating, and repeated washing well but is heavier. Plastic is lighter and better for kids or commuting, but replace pieces that become scratched or warped.
The useful sizes
A 3-cup rectangular container handles most single meals. A 1-cup size is useful for sauce, fruit, and snacks. Giant divided trays look organized but often waste cabinet and dishwasher space.
Leak resistance
For soup and dressing, look for a gasket and four locking tabs. Test new containers over the sink before trusting them in a work bag.
Do not overbuy
Start with six meal containers and six small cups. A small system that gets washed is better than a 40-piece set that never stacks correctly.