Busy boys.

We learned this week not to give our children free use to print whatever they like on the computer. Apparently they decided that every single thing that interested them online needed printed. I now have a stack of scrap paper 2 inches deep to use because of all the paper they used for printing. I also need to track down some new ink for the printer. First, I need to figure out what kind of ink to buy. For some reason I remember it having a serial number along the lines of 108r00727 but I am not sure. Usually the school they attend provides us with ink but I feel like we should buy it since they used up the school ink printing nonsense. Maybe I should have them earn a portion of the money to buy the ink they use for printing stuff unrelated to school?