The other day my family and I were playing a game of Triominos. This was the shape we'd put together toward the end of the game. As I looked at it, I was struck at how you could use the actual shape and tiles as part of a sigilistic working. The purpose of the game is to match tiles together by the numbers. You can get some interesting shapes as a result.
I figure you could approach this technique in two different ways. You could do a solo working where you lay all the pieces on the blank side and then start pulling pieces and matching them together until you get a shape that you can use for a sigil. Or you could do a group working, where instead of focusing on winning the game, everyone focuses their intent on building a sigil shape that they'll use for the magical working. The entire activity could be focused on the actual working you want to accomplish, with the goal being to use the pieces to create the shape or appearance for the sigil to work.
I know it's a little odd and different. Why not stick with the same old, same old, right? But I like having fun with magic and this has a lot of potential for fun as well as working as a focus tool.
Have you repurposed any games for magical purposes? If so, how?