My school does this thing called "dollars for scholars" and people donate stuff and make furniture and what not then they donate it to the school and they host a huge.. basically garage sale. they make normally make quite a bit, and im guessing once you make maybe half of the money you may be able to get some family and other small businesses in your area to donate money which could help you reach your goal. You just have to show them you have a start and explain to them what its for. Plus you could tell them you'd advertise for them by putting a sign up for something.