Magnetic GoPro etc. mount
thingiverse
40 mm magnet from eBay: https://www.ebay.de/itm/Flachgreifer-Magnete-Greifermagnete-Ferrit-Durchmesser-10-125-mm/400538572621 Some thin rubber to prevent scratches. I took that stuff that is used to open unwilling jars and such. Then glue some camera mount of your choice on top. :) https://www.youtube.com/watch?v=g9iyADPhPCY
Download Model from thingiverse
With this file you will be able to print Magnetic GoPro etc. mount with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Magnetic GoPro etc. mount.