We are doing our dinner and live/silent auction next weekend. We are a small Catholic school, this is our biggest fundraiser every year - last year we took in over $60,000.
For our live auction, this year we are doing MN Twins Champion Club tickets, donated by a law office; a Mexican Fiesta for 8, donated by a local Mexican restaurant owner; a full orthodontic treatment; a 4 day pheasant hunting trip in S. Dakota, donated by the landowner; a live cooking show from the head chef at the country club for 12 people; a canoe trip with our Pastor; a golf outing with a former MN Viking Hall of Fame player; 2 nights at a Wisconsin Dells resort; and a lobster boil. Many of these we have done in the past, and they are all big money makers.
For the silent auctions, we have tons of stuff. One I haven't seen mentioned are group events - for example, a card or game night for up to 12 people, at $25/person. Or a pontoon boat cruise with adult beverages and snacks. Salsa making parties. The host family sets the terms with how many people, and, depending on the event, we charge a per person price, anywhere from $25 - $100 each, and once we meet the number of people, it gets taken off the table. We usually have about 10 of these events each year.
I usually donate wrapping Christmas gifts... I purchase all of my wrap after Christmas on clearance, I spent about $8 last year to wrap for this year, and it brought $45 to the school.
I have gotten some other great ideas here also, keep it up!