I had problems positioning my Sigma Aura 60 light straight on my handlebars because of space problems. So I came up with the solution of hanging it under my Garmin Edge mount using a GoPro-Adapter.
So I designed a holder for my lamp to put it on the GoPro-Adapter. I have currently printed it with PETG. The holder is great so far, it holds perfectly in PETG and doesn't look like it's going to break any time.
All you need to do is buy or print an GoPro-Adapter for your bike computer mount and reuse the screw and spring from the original light mount.
For example, this is the original adapter from Garmin: https://www.garmin.com/de-DE/p/552900/
Or this an printed version: https://www.printables.com/de/model/196287-gopro-mount-for-garmin-out-front-bike-mount
These GoPro-Adapters are also available for other brands, which you can find on the Internet.
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I plan to design a second version in the near future in which the edges are slightly rounded and it is generally better adapted to the original shape of the light.
The author marked this model as their own original creation.