Tacx Bottle Cage Mount + The Mudguard.- YES, The GoPro Saddle Mount - NO. - YouTube
B-Mount] for GoPro sports camera, use the camera to record your trips with your Brompton!
Turn any soda bottle into a floating GoPro mount - Moldy Chum
Water Bottle Surfing Tripod Mount Adapter - Sports & Action Video Cameras Accessories - Aliexpress
VEL Bottle Cage Bracket for VEL127 - Feel Good Bicycles
How To: POV Drink Cam : 6 Steps (with Pictures) - Instructables
Bottle Mount Adapter Connector DIY Universal Tripod Cap Tools Flexible Practical Attachment Water Holder Camera Monopod Diving Surfing for GOPRO(Black) : Amazon.in: Electronics