I just make small talk about whats going on, especially at events and orientations. More often than not, I like to ask the new person questions, such as what they like, their hobbies, where did they come from, so I can establish myself as someone who is interested in maintaining a friendship. Of course, if they are uncomfortable with the questions, I tone down or divert to something else.
What is your method of making new friends in a social setting?