Lost set of four ceramic coffee mugs with cute animal designs left in a brown paper bag on a bench at the local park in Milwaukee.

I lost a charming set of four ceramic coffee mugs, each decorated with cute animal designs, while I was at the local park in Milwaukee last Saturday. They were in a brown paper bag, which I think I might have accidentally left on a bench. I've had these mugs for years, and they hold sentimental value, so I'm really hoping someone finds them.