Founded in California in 2002, Knock Knock offers some of the wittiest paper goods and stationery out there. Notepads and to-do lists with cheeky categories like "guilt trip" and "apology" are among the company's snarky, offbeat offerings. Our designers teamed up with Knock Knock to make these notebooks in exclusive colors you'll only find at J.Crew. We've stocked up—and we're having a hard time going back to using regular paper... Paper. Import.