Christmas gift for teachers?

Je

My 3 year old just started preschool 5 mornings a week on Oct 24. She has 2 teachers in her classroom. What should I get them that they actually want? What dollar value should I be aiming for per teacher?

This is a locally owned preschool and I interface with the owner occasionally but she does not really see my daughter. Do I need to get the owner a gift?

I have no clue what's appropriate, so thanks for any pointers!