Although there have been disagreements, with good thinking attached, I actually agree about the fundraising. I'm not about to list all the ways our team has brought in funds over the years since I'm sure you could find that information by searching it - even probably in a thread in CD - but all of them involve the team working together. I was head of the business team on our team last year and will be one of our two captains this year so from my experience there really is no 'off-season' to FIRST - it's a year-round activity. When it's not build season and competition season there should be meetings for training (we call ours "Robot U"), larger fundraising activities, community work towards Chairman's, attending or hosting workshops, and of course FUN!... go to the movies as a team, play lazer tag, go out to dinner! The summer's almost over now so this would be for next year, but when school's out that's the best time to get a lot accomplished since everyone has their time freed up.
Hope this helps and good luck!!
-Gen