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.
Gather an assortment of cylindrical vases in various sizes and large leaves in a variety of textures and color striations. Put a little bit of water in the vases and tuck the leaves inside for a natural display that has a modern twist.