Well first you should find out if they are drinking man,most like a little bottle of something.Always send a card thanking them.
If they don't drink send them a Christmas card,and a gift certificate to a GOOD resturant.(Not a 10.00 pak of Mc D's cupons)
Most I give a 30-40 dollar bottle of something,and a free dinner.
As for the guy and his Scottch,I like a little burbon now and then,but I would dump that $60.00 bottle of scottch on the ground.
BBJ