Methods for application of designs to devices such as headphones, earmuffs, and/or earplugs. At least one exterior surface of the device is painted, and a printed film is placed in a water tank at the water surface for separating the image from the film, such that the image is transferred to the exterior surface of the device. The device is rinsed and dried, and top coat applied. Alternatively, earplugs may have designs applied thereto utilizing a custom fixture configured to hold one or a plurality of devices concurrently with the exterior surface for decoration facing outwardly or upwardly and then transferring an image to the exterior surface using an indirect offset decorating process.
