How to show appreciation to BS faculty during holiday season?

As new BS parents, we are wondering what is the best way to show appreciation to faculty or staff, for example, snail mail greeting cards or email gift certificates? Or wait until parents weekend to say thank you in person?

Gifts are not expected… I can tell you that as a former faculty/dorm parent, I appreciated receiving a sincere note of appreciation in a holiday card more than anything else… home baked goodies were a close second. :wink: