A floral fan can be an interesting alternative for bridesmaids. We have made them in the past for an art deco themed wedding. We think this one is by a Russian florist called Olga and it's loved by Jemini Flowers, Oxford
Floating Flower Tip - Most flowers float pretty well on their own until they start to pool with water and slowly sink. For a longer lasting centerpiece, use bubble wrap to make little skirts for your flowers.