One of my housemates, the only one who smokes, kept smoking outside in the nice little nook by the front door and leaving her cigarette butts just flat on the table.
So I made an ashtray and put it out there. And now it’s full, and I fear she will never clean it out.
It will be interesting to see how high it piles up.

The shape was inspired by an ashtray Lloyd Wright made of cast cement.