What ought I do? I have bought some thank you cards (nice one, not ones in a pack), and especially nice ones for my chairs. I also purchased bound copies of my thesis for the chairs, though not the rest of the committee. I have received mixed signals about this. Some said I definitely should get some for all, others said that tradition is being phased out. In a survey of my recently graduated peers it was nearly 50/50 in my department.
Either way, I can't decide if very nice thank you cards are enough, or not? Note that I hardly know several of my committee members, and they are spread out over the country so things like restaurant gift certificates are not really feasible.
What did you do for your committee?