A clear snd simple behaviour chart to show children if their behaviour is good (green), not great (yellow) or not acceptable (red).  This can also come with a matching keyring which can be taken out and about to follow the same behaviour strategies and routine when outside the home.
The chart is A4 and laminated. The keyring comes with 3 cards (red/yellow/green) on a spiral keyring (colour of keyring may vary).