Leprechauns.

Ireland is a country in the European Union. Perhaps the most famous inhabitants are small fairies wearing a green coat and a big hat. They are called Leprechauns. They have red hair and red beard. They are shoemakers.
Leprechauns usually carry a pot full of gold. Although they are normally invisible to humans, we can see them when the rainbow appears. But they are very clever, so its really hard to find them. Many people believe that their treasure is hidden at the end of the rainbow.
The only way to capture them is by looking at them fixedly and tie their right foot with a thick rope. To get their freedom, they can offer you three wishes or a pot full of gold, but dont trust them. As soon as they can, they will deceive you and they will disappear with their gold.