This is my solution to the DJI Mini 3 stationary overheating issue. Attach an 80MM USB fan to this shroud and you have a platform that blows cool air into the mini 3's cooling ports while stationary preventing a premature shutdown. The fan can be powered directly from the drone battery charger by using the USB A output or any USB power source.

You will need an 80MM USB fan such as https://amzn.eu/d/d2b3S9G USB C adaptor: https://amzn.eu/d/gAQ1uhX