After years of being opposed to student rewards, I finally gave in and introduced a sticker system. So far it is really helping with overall behavior and getting students to actually do their work.
I’m making it as equal as I can as something like this can easily make some students feel worse.
I’m keeping track of who has earned stickers to be sure everyone gets some. Depending on the student they may get one just for turning in an assignment, working on their project most of the class period, doing one thing particularly well, helping clean up, etc. We all have different types of wins and measuring everyone by the same scale will overlook the serious efforts of some.