I wanted to have a decent bike light and I came across this 120 lumens rechargeable head torch from Decathlon. So I designed a bike holder for that.
The head torch can be converted back and forth from the head torch to the bike light.
The bike holder can simply be mounted with cable ties.
Print with support on the bottom side facing down.
Here is a link to the actual light. Maybe you can use other brands too.
https://www.decathlon.co.uk/p/rechargeable-trekking-head-light-hl100-usb-blue-120-lumens/_/R-p-302568?mc=8505682&c=BLUE
The author marked this model as their own original creation.