one option for attaching your action camera is the GoPro Vented Helmet Strap Mount. It's made by GoPro and has the same quality you would expect from its camera. Plus, as a first-party accessory ...

Cheaper than GoPro’s official Head Strap, Amazon’s attachment achieves the same result. On your head, a hat or a helmet, non-slip rubber inside the stretchy nylon straps stop them from shifting ...