I picked up a used Garmin drivesmart 65 that I 3D printed a mount for. One of the accessories for it is a backup camera, and since my sideview mirrors see more of my shoulder than they should, it might make a interesting rear view mirror cam.

On the bike I have an INNOVV K3 front and rear camera system, On my Shoei RF-1400 helmet, I have a chin mounted Runcam Thumb pro powered by a power bank via a USB cable that runs into my jacket. I’m relatively new to getting back on a motorcycle, but I’ve had dashcams in my cars for years and have learned firsthand how they can be a valuable asset.