Why carry a grappling hook in your luggage?

John Edgar Park, director of digital production & technology at DisneyToon Studios, photographed the contents of his travel bag for Cool Tools. It's filled with great and useful items: a sleep mask, a solid pen that takes Fisher Space Pen refills, a refillable insulated water bottle, and, most importantly, a micro grappling hook. What’s in My Bag? John Edgar Park