A coming of age birthday only happens once so it needs to be remembered with something special from our 18th birthday present ideas. Help celebrate their 18th birthday and first year of adulthood by taking them to new heights with a skydive. If you're looking for 18th birthday ideas that'll let them explore the underwater world, the Sydney underwater scooter tour is the way to go. If you're after an experience they'll remember for years to come, the rally drive 4 laps plus 1 hot lap will be one of the 18th birthday gifts they brag about! With our range of 18th birthday present ideas, we're sure they'll always remember this milestone birthday for years to come.