I would love to go on a zipline, or four.
My brother and I made up a small zipline when we were teens.
We would take an old rope, tie it to a big tree on one end and a smaller tree on the other end.
And then we would climb up the big oak tree, use an old leather belt to hook over the rope and grab it with both hands, and slide down to the ground.
It was a blast and something fun to do as we were growing up.