This is a great website to learn more about the US government and the process we have for making laws and electing officials. It also has some games that are okay to play DURING DOWN TIME in class (if you finish a test early, etc.)
PiktochartPiktochart is a great way to make infographics (Those long posters of detailed information you see on the internet or in advertisements.) These would be great for a project to add to or use in place of a simple posterboard. There is both a free and paid option JUST USE THE FREE STUFF!
PowToonThis is a great website for making slide based videos for projects in this class. There is no charge to use the free options in each video, you DO NOT and SHOULD NOT purchase any membership to use this for class. If you have any questions about how to use it come project time, I will be happy to help you.