This is a fun post! I don't have any nicknames myself but my dogs have a ton. There are too many to list, so I'll just name a few.

Marta- Marts, Corgi, Corgles, Cutie

Adele- Dell, Delski, Ski, Stink

We call them by their nicknames so much they know who we mean! In fact, Adele's favorite name is "Stink," since we usually only say that to her when we're in a good mood.