Wash up, clean up & put your coffee mug away.
How hard is it to clear up after to yourself?
Why does every boat have a mystery slob(s) that leaves stuff out, double dips, spill things and generally stinks up the place?
I often joke about hiding a time lapse camera in the crew mess so we can catch our mystery slob(s).
What does your boat do to combat mess in the crew mess?