gift ideas for men coworkers

The best gift to celebrate someone's graduation?
I am on short notice, not rich, and a Mercedes is not really appropriate. While she has a partner and a graduation party at home and invited me today to 8 pm tomorrow. I'm not sure what to get, anyway. And I'm really not in gifts sticky. (I think Hallmark cards sticky and just so know.) So I'm puzzled. Chocolates? Do not know. She has a man to put in a box-core form is beyond question. Does anyone have any better idea?
you can never go wrong with gift cards .. $ 25 – $ 50 is much … anywhere food, Starbucks, something like that is cool