Any old strainer you are not using, or one you find at a thrift store, can be used for an outdoor hanging planter.
While I was out at a thrift store in search for something else, I found this old metal strainer for $1.50. With a bend of the handle, and a portion of the strainer, I repurposed it into an outdoor planter.
When summer time arrives, I will simply fill the strainer with a moss basket liner and insert a small plant inside that.
This "flower pot" will add color and beauty to the entrance of one of my doors.