It's my job at work I've got 2 spare stashed so if we have a small whoops we maintain cover ....
We have a good stash at home probably over kill but you can never have too many when the shtf ...
3l ABF foam in the kitchen + 1.2m2 blanket
3l water mist in the cupboard under the stairs
2l Afff in the hallway..
2l firexo upstairs landing to cover phones charging etc,
3l Afff in the master bedroom
Shed has a ABC automatic extinguisher on the roof plus 2x6kg powder a 6l Afff and a 2KG CO2
not counting the 800ml aerosol abf extinguishers dotted about one by the cooker one in living room other in the shed which goes camping and the car extinguishers 2 of which live in the cupboard under the stairs I swap between powder in winter and foam though the none freezing months