Simplify the following text for a Grade 7 native English-speaking person.
Original: Ivory is little used today , but has been important since ancient times for making a range of items , from ivory carvings to false teeth , fans , dominoes , joint tubes , piano keys and billiard balls .
Simplified: Ivory has been used to make piano keys , billiard balls , handles and small ornaments . Ivory has been used in artworks , such as carvings , since ancient times .