I can't tell from your post if you are a student or a mentor, but please encourage your mentors to join NEMO (Non-Engineering Mentor Organization - we can offer a lot of advice in matters such as fundraising, getting sponsors, mentors, etc. I know that I was introduced to two of your mentors on Saturday but I don't think they made it to the NEMO meeting where we discussed fundraising... so download
this flyer and give it to the mentors...
And refer to
this post for links to the two NEMO white papers, "Creating a Killer Team Packet" and "25 Ways Sponsors Can Help Your Team".