Movies from 2016: Jungle Book, Huntsman Winter War, and Kubo and the Two Strings.
For books I'ld like to recommend "Darkthunder's Way" by Tom Deitz. In this one a group of teenage boys from Georgia take on Uktena the horned serpent ftom Cherokee Myth and Legend.
I've just come to the forums from End of the World: Wrath of the Gods. How about the players playing themselves, but forced back into their nine year old bodies by whatever manipulator sends them to the world of Grimm? Darkthunder's Way even provides a manipulator in the form of Tsistu the rabbit, you can have him change into Bugs Bunny if you like. If your old enough to remember the cartoon with Bugs Bunny and Witch Hazel you can have Bugs mess up the transformation a few times before getting it right.
If you don't mind new age stuff I recommend "Power Within the Land" by R. J. Stewart, especially the technique on page 28 for entering into Fairy Tales.