OMG! Seeing patterns in the floor tiles. My quilting friends and I do that all the time now, including looking at carpeting on the floor! Quilting really does open your eyes to the world.
I'd like to add a couple to the list to the list....
Looking at photos of scenery and thinking...that would make a beautiful quilt!
Looking at birds and wanting to find that specific red, blue, yellow of the feather colors.