1. Write at least one letter to each other each week. 2. Be grateful for three things every day. 3. Master the art of tie dye. 4. Get two counselors to fall in love. 5. Do something daring. BFFs Ari and Kaylan aren’t sure how they’re going to survive their first summer apart. No pool. No sleepovers. No emergency late night chats on the porch. So as Ari returns to Camp Silver and Kaylan heads off to comedy camp, they come up with a new list of 13 and ¾ ways to keep their friendship strong as they tackle everything from bias to batik and moping to matchmaking. Told in alternating perspectives, the fourth book in the popular Friendship List series is sure to make readers cry, laugh, and start plotting their own friendship lists.