Hefty Disposable Cup Cover/Lid 16oz

Lid to protect your cup from bugs, pollen, dust etc when you're outside. It snaps on and you can carry the cup by it, but it does release when you intend it to. (this took half a dozen iterations to do that)

Print instructions

I'd suggest it be printed in PETG so you can toss it in the dishwasher. (top rack).
I printed 0.3mm DRAFT settings with 5% gyroid infill.