I am very excited to use them. I will award them for participation, not speaking English, to actors, etc. They are going to be great for classroom management. Here are the prizes that I have on them: 1 dulce, 2 dulces, +2 on a quiz, +5 on a quiz, permission to sit in comfy chair, free pass for any graded assignment (only 1 of these). Here is my document with them.