Open Question: Goodbye gift at work as a thank-you... IDEAS?

Need a little help... I am leaving my job as a receptionist of 2 years. I worked in the Dean's office of the College of Pharmacy at my university. I'd like to get a gift of appreciation/thank you that could be displayed in the office after I leave. I am obviously well acquainted with the lives of those I work with, and vice versa! Any good ideas?