I created this living document for students who finish work early, meet their goals, or simply need an to showcase their creativity. I keep a copy posted in my classroom, share a copy with parents on my classroom website, and give students copies to take home or keep in their binders.
I also keep a sign-up chart in my room. Students can sign up for which project they'd like to work on, and when they're finished I let them present their project, game, song, etc. to the class, and draw out of a container of paper slips with various prizes written on them. Students can receive lunch with me, a free soda, 5 free points towards any regular class assignment, prize drawing, or sit in a teacher's chair for a day or week. Kids love earning these, and many are free incentives to give away!