I just realized while cooking that a measuring-cup cup (as measured out as 250mL in a glass measuring cup) is the same amount(s) as one of the actual plastic baking measuring cups that go inside each other like Russian dolls lol
I thought they were different somehow (something something imperial metric yadda yadda yaddda)
Your turn to come clean Lemmings!
**EDIT: to clarify, I mean volumetrically for measuring liquids
The real hack comes when you realize you can weigh everything, so you never have to clean measuring devices ever again.
When I make cookies, I use a scale, and bake them on parchment paper. As a result, I only have to clean a bowl, and a spoon (and barely the baking sheet).