Based on this answer I started wondering in which options are available to leave luggage.
It's a common problem when travelling and the most usual places are either in a locker (at airports, train stations) or luggage rooms (at the hotel/hostel). It wouldn't be the first time though where the place where I stay doesn't keep luggage, the prices of the lockers are prohibitive or they don't exist.
I wonder if there is some resource with tips to leave luggage safe and/or affordably.
Eg.: I once met a guy that used to leave his luggage in hotel lobbies. He just left it there and it never disappeared. Worst case scenario, someone from the hotel would pick it up and put it behind the counter. This was a long time a ago. Nowadays you might get your luggage exploded thinking its a bomb :)