One way to cut back on centerpieces. - people often overlook designing table set ups in non-traditional fashions and focusing on tablescapes rather than centerpieces to cut costs. Wish I had this at my wedding!
Blow up a balloon, cover it in doilies using a craft glue. When it's dry, pop the balloon & you have an awesome decoration. Bet you could use it as the lampshade on a small pendant light, too. Great-gramma's and my MIL's doilies may find another use.