I have plenty from my trip on the MS Tofua circa 1969.
The best or worst was ringing the dinner Gong and then running away down the hallway when it wasn't dinner time.
I was caught and told off of course, but was then allowed to "officially" ring the Gong at dinner time. lol
I was given a packet of "Jaffa's" by a lady on board and I decided I would share them with some of the crew rearranging cargo in the hold.
Throwing them one by one down to the crew then emptying the rest of the packet all at once.
I hope they weren't hurt by the falling solid chocolate lollies.
I did the ultimate daring act on both of our cruises: I let DW loose in the shipboard shops with her sign and sail card.
Explorer of the Seas October 2013
Caribbean Princess July 2006, May 2010 & November 2012
Monarch of the Seas November 2008
Crown Princess November 2007
Celebrity Zenith November 2005
Enchantment of the Seas August 2004