There is a Josephine in my daughter's class and they call her Joey. Personally I'd go with Josie as a nickname. I think that's really cute.

I substitute teach in grade K-8 so I see all the latest names. Ellie is back, not sure if that's a nickname for Eleanor or a full name. I've seen a few old school names out there. There is a 4 year old named Gladys and it just cracks me up. I'm waiting for a Lois to turn up.
If you got nothing to bring to the table - don't even bother sitting down.