Maybe one of these similar products would be of interest:-
FlipKlip Portable Book Page Holder for Hands Free Reading in Bed, on the Go - Works on Hardcovers, Paperbacks, Magazines, Piano and Recipe Books
Slim Cycle Comfort Pack Exercise Bike Accessory 3-Pc Set, AS-SEEN-ON-TV, Water Bottle Holder, Upgrade Your Workout - Comfort-Padded Seat Cushion Cover & Floor Mat, Perfect for Any Stationary Bicycle
Fitness Reality Cycling Exercise Bike with Bluetooth Workout Tracking, 360° Adjustable Tablet Holder, 14 Levels Magnetic Resistance & Optional On Demand Coaching
Treadmill Reading Rack - (Tablet, Book, Magazine Holder) - Works on Most Treadmills Ellipticals, Exercise Bikes (Compact Travel Size)
2 Pack Heavy Duty Fishing Rod Pole Rest Universal Boat Dock Clamp On Grip Holder