printer - 1 for each weekday. Name of the day on the top, funny picture in the middle (a duck, a cat, a dog, a car, etc, and the Sun for Sunday and the Moon for Monday :) ). Work days are printed in one gamma and week-ends are in a very bright and different yellow. You also need to print one target-like mark to shift from one day to another and a pin to attach the mark. I stuck the weekdays on the wall - 5 in one row and 2 week-ends below them. It's quite easy to do all that stuff. Moreover my son was very astonished by all that system and was listening to very attentively for my explanation. They just adore when you create games and involve them in collaboration.

Everything goes ok for now, hope you'll find my article useful for your parenthood.