I have a Tiffany & Co double heart necklace which my pent sits on at all times - I can hide it behind the hearts if I have to.

I think I freaked out my boss' wife today at lunch when she asked me what I was doing for xmas and I said "I don't celebrate it" - she looked right at my neck and looked at the necklace (supposedly this is part of my "alternative lifestyle" that my boss keeps on harping on about methinks).

I'm open at work because I decided long ago, if you're open about things, people will ask you questions and become a bit more educated on non-christian pathways. We've got a hindi in the office and she is open about her religion as well.