Tiny tots with their eyes all aglow might be enough to brighten some homes this holiday season. But others are adorned with thousands of blinking lights synched to blasting music. In Mesa, Arizona, 14 homeowners have been going all-out on holiday lights for 30 years, and those buying homes in the neighborhood often find the attics full of décor left behind by previous owners. In Santa Clarita, California, residents began coordinating their holiday lights to bring some joy to their community after an earthquake. And in Edmond, Oklahoma, those looking to the western sky will easily spot the Miranda family’s elaborate display featuring images and music from the movie “Wicked.”