Genius Hour (20 Time, Passion Projects) are a great way to allow students a way to express themselves while also cover standards. The main two reasons teachers are shy to try Genius Hour are getting students started and grading the final product.
I created the two attached documents for my classroom, and I have had numerous teachers request them from my blog.
1) Inspiration Stations: The Inspiration Station document includes student directions for 11 stations. These stations are meant to inspire students about possible Genius Hour projects and get their creative juices flowing.
2) Rubric: The rubric covers expectations throughout the project and leaves the final grading open enough to cover the diversity of projects submitted.