If you want a taillight thats redonkulous here you go:

https://www.ituolights.com/collectio...bolt-taillight

lumens dont sound like much but this thing is BIG, bright as hell and uses an 18650 so its got a long run time eve in steady mode. I love it because since i started using it I have yet to get anything but a wide berth from cars when I have to get on the road itself (try to use paths/lanes as much as i can)