Giving gifts to people who has been a great aid in your wedding whether physically or emotionally, has been a common practice. Give a token of thanks as well as a nice note to anyone who organized a brunch, shower, bachelor or bachelorette party, or rehearsal dinner.
Anybody who has successfully fulfilled their respective roles in your wedding and exceeded your expectations deserves a token of thanks. Appropriate gifts, depending on what you want to spend, include a nice bottle of wine or champagne, a fruit basket, a ceramic or glass memento, a paperweight or piece of glass with your wedding date engraved or etched on it. A gift certificate, or flowers.
Inquire at bridal shops or wedding magazines about companies that specialize in wedding invitations preservation. This is a wonderful gift to the people who aided in making your wedding a wonderful experience.