Two ways that my students can earn bonus points (and thereby Maestro Bucks) through my incentive program is to do a research project or concert report. One of my students, Grant, is pretty technologically savvy and has been using Google Docs to complete and submit his reports.
He simply emails me the link, I print it off to store in my Student Composition and Projects Binder and he gets his bonus points and Maestro Bucks.