18th birthday present ideas need to be special as a coming of age birthday only happens once! For a once in a lifetime experience, gift them shark snorkeling in a cage. If you're looking for 18th birthday ideas they'll brag about to all their friends, send them sailing America's cup racing on Auckland Harbour. It's important you find the right gift that they'll always remember and thank you for and a tandem skydive over Queenstown is an experience that'll do just that. They'll never forget their 18th birthday with an experience from RedBalloon!