Lost my house key today and wasted a lot of time.

I think my key case flew out of my pocket somewhere within a range of about 20,000 yards while travelling on a 50cc motorbike.
I rode slowly on the motorbike twice more along that route to look for it, but could not find it.

While I was at the police station reporting a lost item, another woman came into the police station.
And she said she lost her key case too.
If this is not a coincidence, then huge numbers of people must be losing their keycases every day.

I remember that somewhere in a second-hand shop, a large number of key cases were sold with the keys still attached.
I might find my key case faster if I go to that shop.