I've done some wreaths, before. But those wreaths were pre-made items that I simply decorated. A few weeks ago, I actually made a wreath at a friend's house.
Can you believe that the foundation of this is a wire hanger? Just twist one into a circle, use some small wire to secure greenery to the circle. Then use wire or glue to adorn it with whatever items you like. Easy, and if you use all natural items, it's free(assuming you have a wire hanger)!