The Thing Sling is made for mobile devices but it will actually attach to any flat clean surface using the included 3m adhesive strip. The thing sling uses an elastic strip to bungee your two to three fingers close to your phone. This means that even if your hand goes limp, your phone stays put. According to thing sling, the most common time you’ll drop your phone is while taking a picture. The thing sling allows you to take portrait photos without worrying about anything but the shot. It also adds some noticeable stability when shooting. video.