What's worse than receiving a lump of coal from Santa? How about a box of meat from your colleague?

According to a 2008 study by The Creative Group, sometimes the gift-giving at work goes beyond the traditional bookstore gift card, and cause embarrassment, confusion, and even fear.

If you and your co-worker and boss plan on exchanging gifts this holiday season, check out the following unusual gifts received at some offices, and see what NOT to give.