Even though you're looking for something "free", the Christmas Wreath on the Design & Make site is really nice. That's if you're looking for a 3d file. Otherwise, do as Randall suggests and do a search.
This is the one I did from the Nov 2011 free projects and hung it on my front door for Christmas. I guess I have to make another one. Somebody liked it better than I did and stole it. Great way to honor Christmas.
Just to add my two cents. In 2014 I purchased a pattern from Judy Gale Roberts to be cut out with scroll saw, I'm not the best at that skill, so I converted the drawings to vectors and cut the parts out with my Shark ( old Shark Pro). Then with sanding and fitting I ended up with a wreath that my wife still enjoys today. I believe the price for the pattern was under 10 dollars. Dan