I'm on the planning committee for my local Take Steps Walk and some of the suggestions they give people are:
Bake Sales
Yard Sales
Get restaurants, etc. to donate gift cards and raffle them off
Facebook is a big one they are pushing now
Dress Down Days (get your work to allow employees to wear jeans on a Friday if they donate $1 or $5)
Mobiles - don't know what else to call these, but that's what the Arthritis Foundation calls them...the little shamrocks or feet or whatever other shape that you can pay $1 for at a store and write your name on it and hang it on the wall or the counter of the store
Company match - some companies will match what you contribute
Car washes (like high schools always do for fundraising)
I know there was more, but I've got to get back to work...