I've always loved math.
When I was building my own illusion show way back in the 80's, a lot of what I learned in high school math class I could apply to my props.
Here's a great fun routine I did for one of the Daytime summer shows. Every June, the show spent a week pre-taping all of the shows they were going to repeat during the summer months so everyone could get the season off. This particular taping was on a very hot day and we recorded it in the sun!
And I'm wearing black.......