I've tried to teach my boosters to do a few big fundraisers instead of nickel and diming the community to death. If we weren't making over $2k profit on a fundraiser, we cut it. Drive thru dinners, car washes, etc. They focus on the big ones and knock them out of the park. They're done fundraising in January, it's really nice.
Have them go to the TBA Booster Clinic next summer, give them some resources on Booster Clubs. Yes, you're gonna have to get them started and baby them a bit, but once it starts to grow, you'll be able to let them fly on their own.