I am barely using my cooker now. Since I got the air fryer, I have only used the oven a couple of times. Once was to make birthday cakes (I made two at once, freezing one for the following weekend), and used the smaller top oven. The other was when cooking for too many people for other cooking methods to be viable.
I am also limiting my use of the hob now, having realized how much energy that uses. I have started microwaving the veg, instead of boiling. It works well when I'm just cooking for the two of us, and saves a lot of energy.
(It's just crossed my mind that I should get out my steamer and check how much energy that uses!)
DH bought a teppanayaki (a sort of electric frying pan/griddle) a while ago, to use on campsites, but barely uses it. Having just discovered that it is quite economical to run, and bigger than a frying pan, I've now commandeered it - on Sunday I used it to finish cooking some bean burgers which would otherwise have had to be cooked in two batches on the hob.
Having heard about them on here, I would really love to have a remosca oven too, but the price of those is holding me back.