When I searched all I really saw was the hairy chest contest.
Gater, There are "tons" of contests as Mike noted. I have all of my Capers, that have the various ones listed. I don't have access to where they are stored this weekend. They have quite a few different trivia contests. And some physical ones as well.
If anyone can make a listing of the contests on recent Carnival cruises, it would be great.
In the mean time, here
is a link to a sample Caper for one day. It is a pdf link, so you will have to "zoom in".