What did Mary and Joseph do with the gold, frankincense, and myrrh?

> And when they were come into the house, they saw the young child > with Mary his mother, and fell down, and worshipped him: and when they > had opened their treasures, they presented unto him gifts; **gold**, and > **frankincense**, and **myrrh**. (Matt 2:11 ) I feel that it is pretty safe to assume that they at least used some of the gold to travel to Egypt, and perhaps even lived off of it while they were there. But I don't suppose any Josephologists or Mariologists have made any discoveries that perhaps give us some clues as to what exactly Joseph and Mary may have done with the gifts from the Wise men?