Personally, I'm in love with female names that have male diminuatives. I have heard things like Beneatha nn
Benny, Alice/Alison/Alyssa nn
Al (
Alyssa I have also known as
Lou). There is also
Micky for
Mikayla,
Harry for
Harriet, and
Bert for
Roberta. I'll add more if I can think of any. :)