At the Bottom of My Backpack

When I was a kid, I loved books where somebody discovered a hidden world in a place where it absolutely shouldn’t exist. Stories like Alice’s Adventures in Wonderland, The Wonderful Wizard of Oz, The Phantom Tollbooth, and later Gregor the Overlander all begin with something ordinary—a rabbit hole, a whirlwind, a tollbooth, a laundry-room grate—that suddenly opens into someplace strange,…