Simplify the following text for a Grade 7 native English-speaking person.
Original: The terra cotta disks were used to ceremonially offer the toys of youth to certain gods when a child came of age -- discs of other materials were used for actual play .
Simplified: The terra cotta disks were used to ceremonially offer the toys of youth to certain gods when a child came of age . Disks of other materials were used for actual play .