The same way you can use them for the frame you can also make a Wreath
Get boxes from any where and all different sizes then cut out a wreath shape and glue them on.
Another way is to find some of that Brown Twine that frays and you never know why people would buy it, cut about 5 different lenghts and and tape or glue the shapes in all different levels through out the ropes, gather them all together and use a nice ribbon to make big bows.
Tie it off and add the bow.
Me and my son did this last year, and I hung them everywhere.
The one we used for our main outside door was a big one.