Paper lanterns as light-up centerpieces--inexpensive idea. Slip a Vase in the middle of each lantern and add flowers of choice. OR just adhere silk flowers to top edge of lantern.Put BATTERY OPERATED CANDLES/lighting inside and around each lantern.
DIY Paper Lanterns: An easy-to-create decoration, attach small paper lanterns to each ceremony chair. Find paper lanterns in your wedding color and pull in the rest of your wedding colors with thick ribbon-tied bows, as shown here.