I found another super cool and inexpensive (and green!) option for your centerpieces! How about this very cool idea from Rachel Ray Everyday?
Photo Courtesy of: Rachel Ray Everyday
You don't need vintage aluminum cans to recreate this awesome look. Just gather up assorted cans (washed and clean them first…and file down the sharp edges) – try ones from the rganic or ethic aisles from your local supermarket. They tend to have more unique and artistic labels printed on them. Fill with war-ish water, flower food, and your flowers. Group together on tables and enjoy!