This is GREAT to do after any gift-giving holiday. Get ahead of the year and build up your stockpile so you can do registration incentives or fill out future auctions without the stress.
Consider offering multiple games of chance leading up to or during your fundraiser. They typically offer a lower barrier to entry, so that all attendees have the capital to play. They also add a spark of fun to your event, no matter if it is a walk, gala, golf outing, or happy hour.