I've always wished that annual tax forms included a section where you could indicate where you want your tax money to go, and then those collected results could be published each year. Whether it's done as a priority list or allows people to actually pick percentages, it would be a great way to measure public perception and desires, even if it's just a survey and non-binding. It would reach a lot more people than random Gallop polls, and people would probably feel a tiny little bit better about paying their taxes because they at least have a chance to say where they want the money to go.