As sort of a gag, give her some anti-persperant/deodorant and breath mints since she will be bending over customers all day.

Flavored coffee, teas, nice mug or glass for carrying around the salon

That is great.
Thanks for the idea!

Here is a site with 101 gift basket ideas. Hope you find
something there that you can use.
http://www.angelfire.com/on2/SantaClaus/baskets.html

Or maybe you can adapt this graduation survival kit to suit better.

Graduate Survival Kit
Glitter-to sparkle all night long
Battery-so you can keep going & going
Chapstick-to keep your lips kissable
Starburst-for a burst of energy
Nuts-to remind you to get a little nutty
Mirror, Perfume atomizer, Mouth freshener-to stay ready!
Fan-to cool down when you're too hot to handle
Hugs & Kisses-to remind you how special you are to me!!

I was thinking of getting her a nice big mirror! I know when I go to the hairdresser they always have this big mirror to show you your back of your hair how it looks.