I thought this was going to be about actual 'gifts'.

I haven't interviewed for a traditional job in a long time, but I sometimes used to bring something with me - milk and cookies, brownies, flavored popcorn, etc - as a bit of an icebreaker. I didn't always do it, but it helped to keep things a bit more casual, sometimes gave the others in the group something to snack on while a couple others of us would have a discussion, and what not.

In one case, I brought some milk and cookies to a smaller company, and it happened to be the owner's birthday. He was pleased as punch. :)