Our 4-H always raffles off a gun. Recent silent auctions items around here have been:
Local guy that has a plane donates his time & takes the winner on a ride with aerial pics, etc.
Packing plant donates a case of meat
Rubbermaid plant donates coolers, whatever
Winery donates a case of wine & dinner/wine tasting
Huskey Liners donates mats (you provide vehicle info & they customize)
Kayaks for river runs (it's actually a landscaping business that provides them)
Prairie Land Partners - John Deere t-shirts, cups, hats, etc (and same w/the Kubota dealer)
Turkey hunts
Home On The Range donates a concealed carry class
And small local businesses always have items