I've always loved pumpkins...I leave mine out on the stoop long past Halloween as a symbol of au and harvest.  So how fabulous would it be to incorporate white pumpkins for a fall wedding?  They can be carved with initials or the wedding date and placed on the entrance table, used as vessels for the centerpieces.  How about monogramming them with upholstery tacks or decorative thumb tacks?  Clustered down a long table with flowers or how about a harvest-time favor station?  Just picture pedestals and bowls filled with mini white pumpkins, orchard fresh apples, bags of caramels and nuts with a sign welcoming your guests to choose a favor!