I needed to get my right Bose speaker off my desk surface, and so I designed a monitor mount post clamp & arm to elevate & cradle the speaker so it sits above my right oriented laptop.
Incredibly specific for my needs, but if you have this exact model of Bose speakers, maybe it could be useful. Currently sized for a 35.8mm post. I used 16mm M5 Hex Socket Button Head Cap screws (and nuts) to attach the clamp, and 12mm M5 to attac the arm cap in place.
The author hasn't provided the model origin yet.