11.
“Buying the same-sized reusable containers. I’ve got 1 liters, half liters, and quarter liters; they all use the same lid and stack together neatly. Tupperware puzzle difficulty 0.”
—doomstone420
“I did that, and mine are collapsible, so they take up barely any space. They are stacked up container, lid, container, lid, so you just pull a complete pair out. I…
