MAURICE RIVENBARK | Times As the sky darkens, the lights come on — an invitation to explore the outdoor maze of Christmas displays at the Kresge house in St. Petersburg. Ted Kresge began it all with a few strings of lights 38 years ago. "Our power bills have run in the past as much as $4,400," he said. These days, he uses a lot of energy-saving LED bulbs. The displays include 10 trailer-truckloads of lights, an HO scale model railroad, inflatables, bubble machines and a 70-foot tree. It's at 2719 Oakdale St. S, near the Chattaway restaurant. It's free and open 6 to 10 p.m. daily through Jan. 3.