If you are creative; use washi tape, color, use stickers, use nice handwriting… you can use everything to make your pages as you like. Also, check out their Instagram for a lot of inspiration.
Next to that, try to fulfill the challenges that are written on some of the pages, for example, go to the airport that same day and take a random flight. Maybe it is extreme, but it is also fun and another adventure that you can mark in your Adventure Book!
See some of the pages and inspiration in the photos and video below.