So I cut up Walmart Grocery ads, since they were glossy, and had lots of red and green in them.
I made myself a stencil, and cut out a folded tag from white card stock and similar shaped tags from red and green card stock.
I drew Christmas trees onto the tags, and cut out the tree using a craft knife.
I glued the strips of the ads to the back of the trees, then secured the tress to the white tags.
Lastly, I punched a hole in the top of the tag and threaded a ribbon through each one.