Two of my Irish friends were in San Francisco with their work visas the summer after I graduated college. I met them in the bay for a period. We were walking around Palo Alto one day, and we saw a pair of shoes on top of one of those newspaper boxes. I think they were Vans.
My friend's current shoes were in far worse of a condition as the ones on the box. We checked, and they were his size.
"Is this some sort of trick?" he asked.
We stood around and chatted, waiting around the shoes. No one came to take them, so he just put them on. He wore them for his whole trip.
I went to visit Ireland the next year, and he was still wearing the shoes.