Also go to a banner or sign shop and see if they will donate a "thank you Banner" for yur larger contributers.. You can mention thi on your introduction letter.
If a Grocery store donates 50 cases of water, a Bed and Breakfast donates a weekend stay worth $400.you can list them as Top contributors..
I also like when there is a raffle for a lot of different prizes and a lot of different winners. At our daughters College they sold 4 chances to win for $20. They had about 20 .. baskets full of different themes form different groups and businesses. You placed your ticket or tickets in the box next to the items you wanted to win..
Here is an example of some of them..
A coffee basket (mugs, coffees, coffee press, cookies, chocolate stirring spoons, funny napkins)..
Tea basket (Teacups and saucers, teas, sugar cubes, lace napkins, marzipan candy, books on teas)
Spa basket (gift certificate for a facial, moisturizer, spa shoes, spa wrap, hair products, foot care set)
Comic book basket (collection of anime books, comic books and a piggy bank of a super hero),
Book lovers (gift card to Barnes and Nobles, collection of books, book light, book marks, godiva chocolates)
Soups (Large stock pot, filled with bowls, cookbooks, ladle, dishtowels, and a gift card to a cheese shop)
Wine lovers (Wine glasses, bottle opener, 4 bottles of wine, napkins, gift card to a cheese shop).
They were all wonderful and looked very appealing, I purchased $40. worth of tickets.. They each had a list of the items so you knew what all was included.