There are few Apple products that strike me as completely useless, but now I've seen one in AirTags. I keep my few keys in my pocket and so don't want a large keychain. Plus, who loses keys?! Maybe for a luggage tag, but I'm in no hurry to hop on a plane anymore, between a pandemic and climate change. I was thinking I could tag each of my bikes, but now I learn that any iPhone-toting thief would be alerted that they were in possession of a tagged bike. So they're pretty much useless for me because I'm not sufficiently careless with my belongings.