You could try a speaker mount like this, this or this. I wouldn't recommend drilling into the device to mount to it but it should be light enough that you could 2 sided tape it to the mount.
Here are the bands: https://www.amazon.com/gp/product/B07XYCZS7F/
And here is the Gorilla tape: https://www.amazon.com/Gorilla-Heavy-Double-Mounting-Inches/dp/B019HT1U9E/
Really any bands would work but these fit well and have a small flat area to mount the tape. I had to use 2 layers of tape.