for movies/tv
miyazaki movies(particularly castle in the sky, spirited away, and howls moving castle), avatar, kora, adventure time, pokemon, my little pony(never gave genders), naruto(by the time they get to the more mature content they will be adults), digimon, balto, kekkai sensen, log horizon, A Certain Scientific Railgun, rwby, soul eater,
blood lad, and jackie chan adventures(animated).
for books
rick riodan's many book series, harry potter, lord of the rings(i read the hobbit @5 and the rest by 6), diary of a wimpy kid, chronicles of narnia, hatchet and the other paulsen books, judy blume, the true story of the three little pigs, the borrowers, robinson crusoe, grimms fairy tales(before disney version), Roverandom, the wizard of oz, call of the wild and other works by jack london, the wind in the willows, the voyages of dr dolittle, and earthsea books by ursala k le guin.
if the content isnt too adult, throw it at them even if it's difficult to read like the lord of the rings. maybe they wont like it and maybe they will or will come back to it in a few weeks/months. who knows? you might be cleaning up after the next einstein.