I found people of Istanbul to be natural-born entrepreneurs. They jump on each and every seemingly insignificant opportunity to earn a few Liras. If there is a cloud in the sky, you could expect people to sell umbrella in the street for 15 Lira (which they will eventually sell them to you for 5) and if Israel has just killed 9 Turkish activists, well, why not sell some Palestinian flags? In fact, if there is a need, there is a good chance that someone – within the radius of 20 meters – who is providing the service.
Here, you see a mobile photocopier! Istanbul