What are really fun things to do on a 13 hour car ride? HELP ME!?

I am going to Seattle and it's going to be a 13 hours long ride to get there. I'm very excited but I will be very bored. I need something to do. Please don't tell me to do anything hat has to do with electronics. If it helps I have a 3 year old sister and there are 4 people in my family. And I'm also going on Friday. I will choose the best answer on Saturday so HURRY UP!