Once: Win a tandem skydive in Queenstown from Intrepid Travel.
The two winners will get a tandem dive in Queenstown NZ voucher as their prize - what they dont state anywhere is whether tickets to NZ are part of the competition. I suspect they arent.
The voucher for the jump is open for 12 months if you win it so you have a while to save up the money to get there.
There's a weight limit of 100kg so you might want go weigh yourself beforehand if your near the limit given the mildly critical nature.