We have a ton, too.
Dublin gets: Dub, Dubster, Dubby, Dubby Do, DubL Trouble, and my father insists on calling him Dudley!
Widget is already short for The Wee Midget, but she also gets called: The Widge, Widge, Widgy Woo, and when she comes out from under the covers with bed head, we refer to her as Widgette Barkdot!!
All of which are subject to be modified or changed at any time!
We also have pet names for their silly antics... there is the "Marley no play zone" (he's 13 and grouses at the younguns if they play to close!), the "Fi-fi dance" , and the "seal squeal" are just a few.
I'm just glad that YTers understand. Most people think we're nuts!