As someone who has spent many years in fundraising activities, I know how overwhelming it can seem.  Sometimes the best way to begin is so something fun that doesn’t put a lot of pressure on people.  (If you do not have tax exempt status, you might want to find an organization that does—something local, maybe faith based.  
The A-Z of Fundrasing Ideas  is from an organization based in Britain, so not every suggestion works, but the ideas are truly in the spirit of fun and are definitely grassroots.   (The organization works on behalf of Progressive supranuclear palsy—PSP—a rare brain disorder that causes serious and permanent problems with control of gait and balance.)