Babysitting Help...3 kids and i need to know some things to do?

Okay i babysit 3 kids every week or twice a week or every other week. We usually watch a movie, play out side/go to the park, read books, color, and Play some games. The kids are 2 boys- 6 and 7 years old. And one is a girl- 4 years old. I am afraid that they are going to get bored if i keep doing this. They dont really have a hill to go sledding and the park is a little ways away and i cant drive any where. They love to read so i bring books and movies and stuff...but what are some other things to do? plz plz plz plz plz plz dont give me answers like o they will be fine keep doing what your doing! Please help me...i babysit tonight!:) YAY!