Is there a stowaway in your ancestry? Give him or her a brand new category: [[Category: Stowaways]].
I was looking for profiles with China connections when I came across a figure that I've added to WikiTree: Born Lo Sun (Chinese "last names" come first) , he showed up at the age of 4 on a ship heading to the US from Shanghai. The captain adopted him and he became Edward (his new name) Day (the captain's name) Cohota (the ship's name). He became one of 47 Americans of Chinese Ancestry to fight in the US Civil War, and Congress recently fulfilled a promise that Abraham Lincoln had made to grant US citizenship to anyone who fought in the Civil War. Interesting life. And I'll bet some other stowaways had very interesting lives as well!
For want of a better term, I put Stowaways under a top level category Unusual Experiences. I hope any other categories created under Unusual Experiences will be equally unusual and relevant to genealogy -- not just "I saw a bear in my suburban backyard!"