Here's a primer of possibilities. In all cases, the secret is to start early and keep at it until you've done all you can. We always stand ready to help in any way we can. Most students raise funds in this way.
Samples are available.
Then contact all the rest of the service clubs in your area. If they can't help. Let us know if you need slides, power point presentation or additional info if they want a presentation before you go. If you are taking course in conjunction with your ISL project, most schools will adjust your financial aid package to include help for this program. Let them know you will be receiving academic credit through your school-this is a critical point.