I've been using one of these on my last few KAP flights:https://rollei.de/rollei-smart-epano-360-22100-de-eur
(Sorry, couldn't link an English language description - but it's a pretty simple bit of kit)
Discontinued and cheap. I picked one up for 12 Euros. Screwed upside down between Picavet cross and camera holder (it has 1/4" mounts top and bottom) it enables one 360° panorama in various speeds. I've been using 15 minutes - just switch on before sending the rig up
It will only allow one 360 pan before stopping, but a big plus point is the low weight (less than 100g).