Stick some play-doh in between the 'teeth' of an upturned ice cube tray and let them floss it out.
Let your kids role-play as doctors while you complain about a symptom, and they try to diagnose it.
Kids learn and understand discipline best when they themselves play the role of teacher to their parents at home.
To teach kids healthy eating habits, be chefs together regularly and teach them nutrition.
To teach your kids about hygiene, take their dolls and show them how to take care of themselves similarly.
Role-playing games are not only good for your kid's imagination, but also encourage healthy habits in them.