You can metaphorically take a page out of a coloring book, and break up the work into a few sections. Each team member or group within the team should first be instructed on which part of the page they are going to color, let them know what color they can use, and when their turn will come up. Next, after each team member has finished their part of the coloring than take the completed picture and hangs it up so that every one can see their part of the picture and the entire teams contribution.
The themes of adult coloring books are usually intricate and centered more around adult images, not your childhood counterparts that included bunnies, super heroes, and farm animals. You would expect to see geometric patterns, psychedelic patterns reminiscent of doodle art type pages, fantasy images including angels, dragons, goddesses and mermaids, and ancient designs of religious and spiritual nature.
Often at times, the trip starts at the airport with excited and maybe nervous children preparing for what may be their first time on an airplane. Thankfully, most airlines will allow pre-boarding for families with young children to avoid the crush of the regular boarding call. Arriving at the airport in plenty of time to familiarize your children with the airport processes will help and will allow also allow them some time to explore the airport. Regardless of if you are traveling by air or by car, always remember to pack snacks, drinks, books and other attention holders to avoid the dreaded, "Im bored" complaints. An extra change of clothes also helps in the event of any travel related illnesses.