We will be away for two months in the Summer and both my kids are great readers (no friends/ machines there, you see!). I need suggestions for both of them. They have read the Little House series, Harry Potters, Warriors, Noel Streatfield, Horowitz, a lot of the children's classics. I need long complicated books so they last and partic faves are action spies, and ponies (not Heartland, read those). ANY suggestions? Please? Thanks.