We spotted several of Santa's unofficial helpers at the Main Post Office in Chicago.
The would be elves are actually generous shoppers and USPS employees who want to help children and families have a better Christmas.
They are picking letters to Santa from children and families in need.
"We want to adopt a family or group so we can provide something special to the family for the season," said Marsha Holmes, who was planning on picking out a letter.
Some of the letters were from children asking for gifts for family members and neighbors. In other letters, children asked for toys and clothing including warm gloves.
One USPS employee told us she was taught from an early age that the more you give, the more you receive. "But it's about the giving," she said. Another employee was waiting to pick his letter, something he said he does every year.
The letters are in boxes on several tables set up at 433 West Harrison Avenue.