Get an Accessory Kit for Cheap
GoPro accessories don't have to be expensive. In fact, you can get a whole accessory kit for around $30. It won't be the highest quality stuff around, but if you're a casual user, it'll do the trick.
There are a lot of GoPro accessory kits to choose from, and they all cost about the same, but I went with Black Pro's kit, which comes with all kinds of accessories, including a bike mount, head strap, chest strap, selfie stick, and much more.
You get a lot for what you pay for, and if you're even remotely interested in getting into GoPro stuff, it's something that you'll want to buy.
As an Amazon Associate I earn from qualifying purchases.