 "GoPro Floaty Backdoor - floaty backdoor" " GoPro backdoor AFLTY003 Digital Camera Accessories CDWG.com
"This easy-to-spot flotation attaches directly to the housing backdoor to keep your GoPro afloat. Great for snorkeling, surfing, wakeboarding or other deep-water activity." 
 "GoPro Headstrap Mount + Quick Clip (GoPro Official Mount)" "Camera Supports & Stabilizers | Video Gear Outlet"
"Includes a Head Strap and a Quick Clip for a variety of head- mounting options. Fully adjustable to fit all sizes, the Head Strap can be worn over a helmet or directly on your head to capture footage from a headlamp-like perspective. The Quick Clip enables ultra-compact, low-profile mounting, and can be used to attach your GoPro to a backwards baseball cap or other 3mm to 10mm thick object." 