E.L.
I have a teenage step daughter that has given her father and I our fair share of grief! It got to the point that all her "extras" were taken away and she was to earn them back with "points". The points were earned from a varaity of things, mainly chores. Each chore was worth a certain amount, and once "X" amount was earned, an "extra" was given back. It worked very well at showing the value of the things that are not nessesities!