I printed https://www.printables.com/model/1320401-centauri-carbon-heated-chamber-mod to add active heating to my CC chamber. I found the hot air goes pretty straight out of the heater making it take longer for the heat to get to where the model would be. It could also introduce a lot of heat directly to rods, belts, etc. I wanted to redirect that heat towards the middle of the chamber to point it more towards the build area, so I designed this model. It slides directly onto the heater, just like the magnetic mount mod I referenced. I would recommend printing this in Polymaker/Fiberon PA-GF25 and PPS-CF10 or another material with high heat resistance.

I also have the Inventor Part file which if you want to modify the model.