Here's an easy centerpiece idea that stacks up well against pricier options: clusters of flower-filled cafe au lait bowls. You can find inexpensive ones at home- and kitchen-supply stores (ours are from Anthropologie and Sur La Table); or collect mismatched vintage styles from flea markets. Place floral foam in the bowls to anchor the blooms, then group them on reception tables, stacking some atop inverted ones for visual interest.