Here is a "Chews" the right gum ball machine that I designed for primary. Our ward is using it as an incentive for having the kiddos bring their scriptures each week... but you could use it however works best for you! (blown up for sharing time/music time, teacher behavior chart, you name it)! When kids bring their scriptures, the teacher will put a round colorful sticker on the gum ball machine and when it's full, the class gets a prize!
You should be able to right click and save!