Tin cans are usually thrown away, it's rubbish - and nothing more. And a man with imagination will be able to give them a new life. Especially if necessary. The photo shows unusual and convenient option of a vertical garden. The place is saved, no need to run into the garden every time for the next portion of vitamin greens.
In the old tin can, you need to make holes for drainage. Another hole is drilled near the edge of the can. A rope is stretched through it, and it turns out an unusual container that can be hung on a nail. This is the main idea, everyone diversifies it to their taste: cans are painted in different colors, suspended by clusters on a nail.