- A GoPro Hero5 Session - which is a ~2 inch cube that shoots 4K: which I use for running, bicycling for transportation, and as a dash cam. The stabilization features works decently. ~$150.
- An iON SnapCam - https://www.amazon.com/iON-Camera-SnapCam-Wearable-Bluetooth...
If you can find a good way of attaching this to yourself, it's not too bad. Fairly* low profile - about 2 inches by half inch. It can be purchased for ~$25.
Some things I am working to overcome is really on the "cloud" and "streaming" sides, as I feel it defeats the purpose to stream or upload to policed platforms like YouTube, Facebook, Instagram, Twitch, etc.