I'm all about classroom incentives, but I HATE buying things from the dollar store to fill a treasure chest! I use these classroom incentives that the students purchase with our classroom cash. The best part is that is costs me nothing at all ;)
Use the teacher's chair for a day
Move your desk next to a friend
Sharpen your pencil at anytime
This kit has three levels of incentives: $10, $20, and $30 prizes. There are 15 total prizes! I've kept the project in publisher so you can edit them, but if you would like me to send as a pdf- I can!