DIY - Glow in the dark pots with mums for fall/Halloween. Buy a flower pot that you really like and use Rustoleum's Glow-in-the-dark paint to paint the pot. During the day, the paint will absorb the sunlight and at night the pots will glow.
(battery operated) candles with rose petals for ceremony. I think this is how I want the aisle to look. Between the family we might have enough battery operated candles to do the aisle, or at least a good portion of it. No aisle runner.