The newer collapsible spares are quite interesting too for this. But neither of my cars have spares (one never had room, the other has an lpg tank), tbh flats are just rare now with modern tyres especially if you keep on top of wear etc, so I’m happy to maybe goop it and then otherwise breakdown it.
(or one time, walk home and get another wheel)
Aside; I checked the manufacture dates on my winters thinking they’re getting a bit old now and the pair that I’m about to replace are almost 10 years! That crept up on me, super easy thing to stay on top of but you have to actually do it, “once a year” checks are some of the easiest things to overlook though. Can’t even guess how often I’ve checked tread depth, condition,looked for cracks, checked pressures etc and missed that.