The best way to make a fire tornado (in my opinion!) All you need are 2 glass half-cylinders. No moving parts, no fans, no squeaky bearings, just fire and forget!
Inspire to Make - Meteorite Ring https://www.youtube.com/watch?v=82AzU2MQZ_I
somebody pointed out NightHawkinLight was the first to do multicolored fire tornado, oops he gets the prize!
End Music : Ella Vos - White Noise