Amateur Radio Experimenters Group Inc – have an interesting project running for Radio Active Scouts to follow. Attaching a Video Camera to a high altitude balloon has many technical challenges. Receiving the images in real-time poses significant challenges. Follow the project on https://www.areg.org.au/archives/210135
Radio Active Scouts can even receive the Telemetry from some of their balloon launches. This takes a bit of setting up and you may need some help but it can be good fun.
AREG are an active group of Amateur Radio operators who do some really cool stuff. They were very active at AJ2019 Amateur Radio Station.