Another cool thing you guys could do is simply volunteering to get your team name out there. (Yes, it sounds lame, just follow me here.) Our school's JROTC ( I think that's what they are called, my apologies ) usually volunteers at Team Ortho marathon events, and sometimes is even paid to go to these events to help out due to lack of volunteers. My math teacher/student council advisor told me about this opportunity and I really hope we are able to do it.
Here's a link.
As for ideas on how to fundraise: My brother, a senior, wants to do a dunk tank with the seniors on our team. When fundraising, it's best to make yourself stick out! Buying cookie dough from a catalog gets lame fast (and who doesn't like dunk tanks). Also, during the school year we almost had a Cold Water Challenge-Esque fundraiser but it didn't really execute due to lack of planning.
Team 3313 Mechatronics has a great business plan with a budget, that's the base for our business plan currently. You can also assign rewards for sponsors in a tiered fashion that way.
