Throughout the year, my classes complete a couple of projects.  Some are long term and some are class projects.
My Short Term Projects:
During the Native Unit:  We make Dream Catchers and we try to write in Tsalgi, which is Cherokee writing.
During the Colonial Unit:  We construct a newspaper, where the students take on a colonial section and write about issues addressing their perspective colony.
During the Revolutionary Unit:  We complete a series mini projects in class, where the students become characters from the time period by reading primary source documents and then creating their own by writing protest documents.
During the Foundations of our Government Unit:  We set up debates based on Constitutional Law and precedents.
 

My Long Term Projects:
During the Exploration Unit:  The students will receive a list of projects that they can choose from ranging from constructing a game board using explorer information to constructing inventions from the Industrial Revolution.  
Our Final projects:  Since the end of the year comes quick, and I never make it to the Civil War, I constructed a project which lets students decide on the one final topic in US History that really interests them; they get to research that topic, create a power point presentation and present their topic to the class.  This allows the students to learn more History from their peers.