Sticker Reward System: Instead of putting stickers on students, give them a small notebook for them to collect their stickers. Once they have reached a certain amount they are able to spend their sticks and all I have to do is cross out the ones they used.
homework incentive - Each night 100% of the class does their homework, put up a letter in the homework banner. If the class gets every letter in the banner, the whole class wins a no-homework pass!! But if one person doesn't do their HW? The WHOLE banner comes down!