[Army Wife'79]

I'm flying out West to visit my son at college and will meet his girlfriend for the first time. Her birthday is the week I'm there so I'd like to take a little ($20) gift. Besides a gift card, what would you girls like these days? She's in a sorority, Sigma Kappa, but I don't know their symbols and creatures (like owls, crowns, keys etc.) I know their color is purple. Help a Momma out please. What is "cool" these days?