I agree - I HATE fundraisers!!! I eventually learned to say no. I still buy something occasionally but if I see a kid standing at the door with paper in hand, I don't answer.
The best fundraiser our old school had was a Christmas store. This was when dollar stores were rare or non-existant. We'd ask for the parents to donate their unwanted junk, buy lots of stuff wholesale and then let the little kids go Christmas shopping for their family. We had items for a penny up to a couple of dollars. The kids came with a list of everyone in their family and an adult took them around to pick things out.
That was back when we had a Parent's Club rather than PTA at our school. I had 'lived under' PTA rule at other schools and this was far more my preference - all the monies stayed with the school, nothing had to go to the parent organization. Once the PTA replaced our group, I quit and not long after, we started homeschooling the kids.
My husband still talks about my brother's technique with fundraising. Whenever my niece was selling candy for 'whatever', my brother would walk into work with the box of candy bars, throwing them to everyone who passed by saying. "You owe me a buck. You owe me a buck, etc." She never had to go out to sell anything, he'd do it for her. Dh still tells that story to everyone who is involved with some form of selling. It must have made a huge impression on his young mind.