Here's a quick idea for an ornament that's as easy as it is fun.
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Form a cardboard cone with a 3" base, and glue in place. (You could also use double-stick tape.) Trim a small hole at the top.
For the hanger, thread twine up through the top of the cone and form a loop; leave several inches of twine inside the cone and tie a knot at that end.
Glue biscuits all around the cone from the base up, overlapping each layer.
Paint the tree green.
To form the trunk, attach a screw eye at the top of a dowel and tie to the strand of jute left hanging on the underside of the cone.
Spray orange peel texture to add snow; tie a ribbon at the top.