I have airtags in my backpack, briefcase, wallet, luggage and keys now. One of the best qol improvements I've done. I'm careless and forget stuff a lot and even just saving the few minutes it regularly took me to find stuff misplaced at home is great. It also let me recover my bag when I forgot it on a train (I watched it go to a holding station overnight and travel all over the country the next day, and could then anticipate where it would be and go take it back)

I also have a similar experience to that described in the article (nearly 10 years ago, pre airtags) of having my wallet drop out my pocket while cycling in the Netherlands. A German couple found it and took it back to Germany with them as they weren't sure what to do. They found me on Facebook, asked if it was ok to take some cash from the wallet, and put it in the post back to me in NL.

Coming from South Africa which probably has similarities to Russia in terms of return rates for lost valuable belongings it was quite a defining moment of "Europe" for me.