I've done parasailing twice... once up the Pitt River at Shasta and once at Lake Tahoe. I LOVED it. I'm terrified of heights. I can't do the outside Fairmont Hotel elevator. Collapse in a pile of fear on the floor. Can't stand next to a window in a highrise, hate to fly in an airplane but I loved parasailing. So smooth and quiet and a point of view you'll never see elsewhere.
I don't think I'd do the zip lining, hot air ballooning (definite NO), skydiving (ditto). Remember bungy cord jumping? The platform, the crane the cord? I remember long ago during that fad. There was a small operation in San Jose. The operator on the platform got the "victim" ready for his jump... forgot to buckle the ankle piece secure... guess what happened when he jumped.