Birthdays are special, but milestone birthdays are extra special. The 21st birthday is perhaps the biggest milestone birthday - the age at which childhood is a distant memory and a boy truly becomes a man. The traditional gift for the 21st birthday is a key to the door, a gift that would be complete with a Personalised Keyring. With his newfounded adulthood, maybe a great 21st birthday gift idea would be giving him the opportunity to get behind the wheel of an amazingly awesome car with one of our Driving Experiences to get the testosterone pumping! To commemorate this milestone with a really special gift, make it a Personalised Gift that he'll treasure for many years to come. Celebrate his 21st birthday with exciting presents from Prezzybox!