Sand and paint or stain the base to match the frames.
Place a pillar candle, a battery-operated LED candle, or a small string of battery-powered fairy lights inside the box. The open frame sides allow light to filter beautifully through all four sides, casting warm, dappled light through any glass panes you choose to re-insert, or glowing softly through the open frames themselves if you leave them without glass. For an outdoor version, drill a few small holes in the base for weather drainage, insert a waterproof LED candle,