Your toys will be sad if you didn't clean up after you're done playing with them.
If you clean up your room everytime after playing, your room will stay spacious and you will have space to move around without accidentally stepping or kicking your toys.
This way, your toys will be happy.
I have a child with special needs, and she learns things better visually and verbally.
With these illustrated books, I teach her how to behave while learning how to read at the same time.
I hope it helps you and your children as it helps me and mine.