Plane im gonna be bored any suggestions?

im going to colombia june 30 2010 and i have perfectly nothing to do on the plane and if i stare out the window all i will se is clouds what can i do so can not be bored like isn't there something for me to do while the plane ride bye the way it is a 2 and a half plane ride and im almost 10 answer quickly time is runing out plz plz plz answer