I award a table of the week prize to the table that earns the most beads that week. I use beads from the crafts dept. and tupperware container for storage of the beads. Each time the tables are working quietly, staying on task, keeping a neat table, etc., I award that table a bead. At the end of the week the table with the most beads gets a prize. The prize may be 20 minutes in the library, a free coke at snack, a prize from the prize box, etc. It has made my class want to work together!