Yankee Candle has a great fundraiser for organizations. I think you make 45% profit from the orders -- everyone loves candles!
Also, we have a bowling ally that lets local groups have fundraising nights. Bowling costs $6 per person, and he gives us about $4 each! Talk to local college hangouts and see if they'd be up for it.
There's always car washes too if you want to freeze your butt off! Maybe people would feel bad for you, and give you more money...