I also had a stryofoam cone in my stash. It was the perfect size to make a peppermint tree. I started gluing on the peppermints on row at a time with my glue gun. It went quickly, but I had to stop every so often and open more peppermints.
I glued on 4 red ribbons and tied them together on top in a loose bow. I am still not 100% sure I am going to keep it this way, but I do like the look. The peppermint tree with also need to be sealed with varnish to use again year after year.