The latest thing past "candy bars" seems to be a Popcorn Bar.  This is an idea that can go from "black tie" to "backyard".  The limits are all in your head.


Here is a great site for directions and inspiration:
DIY instructions and more............
Have fun!  Keep in mind these are perfect for so many events:  great for little children's hands, great with your favorite sports team's logo for tailgating, makes a great centerpiece, etc.