Time to give and receive gifts or receiving gifts from adults is made by hand in the use of both hands. If you get out of the way by hand is considered bad manners.
Time to deliver and pick up things or get something from the parents or guardians are made by hand using both hands to get the. If parents or guardians pick using a single hand are considered bad manners.
The time to deliver and receive things or take things from adults will be made by the use of both hands in the hands of the recipient if you are using the large one hand will be deemed to be in manners.