This is a great little list of gifts - Christmas or otherwise - for coworkers. They are unusual and affordable - the best situation to have!
They cover mouse pads, something to stop you cell phone buzzing, a pencil holder in the shape of a butt (I had one of those) and coffee tumblers.
10 fun, affordable gifts for co-workers - CNN.com
"Holidays in the office can be predictable: coffee mugs for your boss, a gift card for your co-worker, fruit baskets for clients. This holiday season, however, may prove to be a little different, as there is less money to spend and fewer co-workers on gift lists."