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. This is great and won't punish the entire class.
For camping or late nights at the beach? Leave 1/4 of Mountain dew in bottle (just dont drink it all), add a tiny bit of baking soda and 3 caps of peroxide. Put the lid on and shake - walla! Homemade glow stick (bottle) solution. kids