Use green, yellow, and red colored cups for group work. When a table gets too loud, change the cup to yellow. If the table continues to be too loud, the cup gets changed to red; this means a loss of group time. Students now have to do their work independently and silently.
I got these large caddies from IKEA to replace tons of grimy smaller ones that I hated. Each Gladware container holds a students crayons. The cups with scissors are velcro-ed to the caddy to keep them from sliding. Im planning to tape a copy of this picture to the side of the caddy so the kids can reference it when cleaning up.