I think most of these work on their own, but I think most nicknames are just fine on their own. Many people have them, and they seem to work for them just fine :)
I think any of these can work on their own:
Gwen -I believe a full name in it's own
GretaRosie -:) I have a
Rosy. She is
Rosemary, but
Rosy fits her better. It would be fine as a first name
EvieNell -I knew a lady named this, it seemed fine for her
TessNolaPenny -I love
Penny much more than
PenelopeTori -I knew a lady named this, it seemed fine for her
DellaLula -This is so similar to
Luella, it works
Callie -I knew a lady named this, it seemed fine for her
Cammie -I knew a lady named this, it seemed fine for her
Millie -I knew a lady named this, it seemed fine for her
MollyBillie -I knew a lady named this, it seemed fine for her
Bobbie -I knew a lady named this, it seemed fine for her
Sadie -
Love Sadie, but don't like
Sarah, I'd use this as a full name
Cleo -This is on our list for daughter 2.0. It works just fine
Charlie -ALMOST my name, instead I got stuck with my name. I'd rather be a
CharlieNora -Prefer
NorahBetsy -I knew a lady named this, it seemed fine for her
Elle -A full name in it's own
Birdie -I knew a lady named this, it seemed fine for her
Lucy-A full name in it's own, one of my very very favorites
Kate
BramWill Quin -prefer the spelling
QuinnFinn -A full name in it's own
DrewAlecTheoLiamLeoCharlie -love this wayyyy more than
Charles, I'd use it as a full name if I could
Archie -I know a man named this, he seems to like it just fine
MaxEli -A full name in it's own I believe
Others I can think of:
Gus,
Allie,
Jake,
Chris,
Maisie,
Liza,
Hank,
Ted, and
Dolly