The stationary lights on the rides and exhibits at the carnival can turn into interesting abstracts of color and shape. Shoot at a wide-open aperture and defocus the lens to turn the light bulbs into circles. Create a composition that has a design to the pattern of lights for best results. This is part of the ride that appeared in The Fair Carnival at Night #4 here.
I cover these and other techniques for photographing carnival rides in Night & Low Light Photography at the Fair, starting August 7, 2018, at the Lifelong Learning Center in Missoula. Register online here: http://tinyurl.com/hqyg9br