I made a Grunkle Stan cosplay partly because I wanted something that I could easily see and move in, and with no gloves for ease of taking photos and looking through comics bins, and partly because Grunkle Stan is a lot of fun.
It was pretty straightforward. The hardest part was finding a one-button black suit that fit me at a thrift store.
The cane is a PVC pipe with a rubber pointy tip and a styrofoam ball that I made.
My proudest detail is the (barely visible in the close-up) little nose-warts in the face paint 🙂