3. Candlelight! Big impact, small(er) cost. I know we want flowers everywhere, but renting candlesticks from your florist is less expensive. And you have so many options: lanterns, taper candles, pillar candles, floating candles, all the candles!! I love a room filled with candlelight and ambiance.
4. Potted plants are a great way to combine costs. At the end of the night, your table centerpieces become gifts for guests or the wedding party. Or, I love the idea of saying your vows surrounded by lush greenery, and then bringing it home and nurturing it and watching it grow. You can actually have a completely lush setting without any cut flowers at all!