Matthew 2:11

Matthew 2:11. 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.

These were the products of their country, such as they would give to princes. Such treasures must have been of great use to Mary and Joseph to help them take care of the wondrous child who had been entrusted to their charge.