If you're allowed to use that as an example of a selfie stick, then I should be allowed to use James Wallace Black’s 1860 aerial photography. :-)

https://time.com/longform/aerial-photography-drones-history/

Or maybe the pigeoncam from 1907.

https://www.newyorker.com/culture/photo-booth/the-turn-of-th...

It seems much more likely that the stick in this picture was used to press the shutter release button of a camera on a tripod than to suspend the camera itself.