Hi Tim. Our fleet has used various items, some in the general theme of the event such as old 45 records with custom labels for our "Viva Las Perry" Regatta as well as the cut-up masts (lots of work to make into mugs). One of my favorites is to take photos of the sailing teams with their boats when they are getting set up. Then, you have someone one-hour process and/or digital print and put the photo into a nice frame with a reference to the event/date. That's one that I keep on my desk, anyway.
Good luck from Fleet 149.