I don't think you want to start making food to sell. MANY districts won't allow it. You can buy already made heart shaped lollipops. We sold four cases at Valentines Day, which was over 2000 lollipops. Remember you want your fundraising to be easy.
Last year for Valentine's Day, my Co-President, myself and one other volunteer MADE rose and heart shaped lollipops with those candy pieces and molds. We sold almost 500 of them for $1.00 each and they cost us about $0.25 to make. If you have the time and volunteers, I bet they would sell alot better than the premade ones. However, they are a lot of work!!