For a while a long time ago I used the monoprice action cam (discontinued). It looked like a bike light, didn’t have stabilization but had an easy to use big switch on the top. Worked well enough but along with my bike light it was another thing to charge and I didn’t have time to go through all my footage.

Recently I’ve attached my go pro and it being much newer is better and digital stabilization but the battery life isn’t great.

So I usually ride without. But I have a cell phone in my pocket..