you give some guidelines when choosing an optional reward for
the rewards are meant to be just large enough to encourage playing.
These will vary widely by the individual. The idea is to start
small and increase them slowly.
100 Star Reward : A small reward such as extra time doing a favorite
activity or a small amount of money.
200 Star Reward : A favorite meal.
300 Star Reward : A new toy or game.
Level 50 Reward : Trip to a park, zoo or go see a movie.