For our behavior system, we work towards weekly minutes for Fun Friday time. I have found that the students really own their behavior using this strategy. I use a clip chart that they can move up or down. I have the clip chart on my profile that you can download for free as well. Please look at it.
On this chart there is a place for lost and found minutes. I have a box in the back of the room. If a student left any materials in my class that they were not supposed to leave behind, I dock a minute of Fun Friday and place the item in lost and found. I just draw tallies on the Fun Friday chart for every item "lost". It has been great with the student’s organizational skills!