Street vendor possibilities

Two thoughts. First, one could walk around the streets of New York with a tall hat with the words "Directions: 50 cents, Maps: $1." Obviously, you would sell directions and/or maps to the many lost people of the city.
Second, you could wear a similar hat or garment that advertises your willingness to take tourists' pictures, for a modest sum of money. "How about a picture of the two of you?" Using their camera, that is. These are both low overhead operations.
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