My favorite fundraiser: The 8th grade Girl Scout troops with my grade school had an annual rummage sale that took up the entire former church. I was very upset my troop declined to participate (we had a dance instead). I went and volunteered with the other troops. Itís now a baby/child specific rummage sale, and I donít think it does as well, if it's even still going on.
Most profitable fundraiser I can think of: The Boy Scout troops in our area are generally in charge of the fish frys during Lent. Since all the time is donated, and all the food is gotten at discount, the troops make bank. Iím fairly certain it covered the bulk of getting the boys to camp each summer, at least for my brotherís troop. And since I live in a predominantly Catholic area, there were enough people abstaining from meat on Fridays to sustain all the fish frys.
Most obnoxious fundraiser: My high school sold calendars. At $25 a pop (I think it was that much. It might have been more. And it appears theyíve discontinued that fundraiser as I can find no mention of it on the schoolís website). Sure, it came with the chance to win money, but it was still a crazy expensive calendar. And we were required to at least sell three.