Even if you don't want to do it you should! It shows that you are a team player and that you know your co-workers. Here are some fail-proof gifts:
It's a guy? The easiest thing to get a guy without looking too thoughtless is a tie. Men are always going to need ties. As a big fan of functional gifts, it is the perfect thing to get your secret santa. The best ties are sometimes the limited edition ones or a classic blue or red...any solid color. I know ties can be expensive but you can get something very nice for less than $20 at TJ Maxx or an outlet store.
It's a girl? Girls like their living space and they like pretty things. The safe bet is to get glassware, like wine glasses, wine decanter. Those do also run very high in the price department. But, once again at stores like TJ Maxx you can get a great quality, even brand name one for also less than $20
Dilemma: Office Holiday Party