Hi there,
I can understand your frustration. One thing to consider: To parents within your community run businesses that could offer a service for the auction? Say, one-hour of free financial planning, or that sort of thing? Also, have you checked within the community to see if anyone knows of anyone who owns a vacation home that may be willing to auction off a week? These types of auction items can be really popular.
Do you have a 501c3 number and you just don't have the letter? Disneyland has very specific requirements and you have to be a 501c3 with specific parameters. If you don't have the letter, talk to your principal and see about getting a copy of it.
