Math Clock Games What Thing/s Do You See Everyday That Reminds You Of Math?

What thing/s do you see everyday that reminds you of math? - math clock games

I need to show a collage of things, the things that we regularly use, or use every day and reminds us of mathematics. Can you help me? I'm running out of ideas. I have books, signs, buildings, finance, trade, banking, chemistry, science, temperature, computer, clock, game system, internet, music systems and the DVR.