If you know the brand of cigar he or she smokes you can acquire a box of them; crystal snifters for cognac also make a great gift and they are a lot less expensive than the cognac itself. Deciding how much you would like to spend would help greatly as that will put you in the right category right away; while none of the cigar related gifts are inexpensive you can find some that will match almost all budgets.
Cigar Aficionado