In fact, the Bible doesn't mention how many wise men (Magi) visited Jesus. 

Since the Bible is silent regarding the number of Magi, many theologians have assumed a one-to-one correlation between the number of gifts and those giving them. This amounts to nothing more than a guess. The belief that three people came to worship the Lord is a classic example of a speculation or theory (like the idea of evolution) made to seem like fact through its consistent repetition.

 

''After they had heard the king, they went on their way, and the star they had seen when it rose went ahead of them until it stopped over the place where the child was. When they saw the star, they were overjoyed. On coming to the house, they saw the child with his mother Mary, and they bowed down and worshiped him. Then they opened their treasures and presented him with gifts of gold, frankincense and myrrh. And having been warned in a dream not to go back to Herod, they returned to their country by another route.'' - Matthew 2:9-12 (NIV)

 

The wise men, or the men from Parthia, brought three gifts (gold, frankincense and myrrh).

BUT this doesn't mean that there were only three of them. We don't know if two or ten men visited baby Jesus.

 

Nearly all nativity stories, movies and depictions include THREE wise men. It's a commom misconception, but it isn't a very destructive one. 

It's alright to depict wise men who each carry one gift, BUT nevertheless we should be careful when adding information to God's word. This addition might not be destructive, but many other misconceptions are.