What I find illuminating eating is the number of cargo flights on Flight Radar. I guess they have always been there but lost in the mass of passenger aircraft shown. Now, with very few flights, you click on the icon and it's a freighter. In my idle moments most of the craft activity seems to be cargo. Made me realise what a huge business it must be.
The other odd thing is the number of normal flights going to unusual destinations. A3 (Aegean) has had numerous flights going into ALA (Almaty, Kazakhstan) over the last few weeks and they don't have passenger services there. Again, cargo I expect although what it is who knows!