Of course, you don't need to make them plaid at all. Find some cute wrapping paper, some cardboard cones from the craft store and spray adhesive.
First of all, draw out your shape. Lay your cone on a straight edge and using a pencil, roll your cone as you trace the line. Make sure and make a mark on your cone so you know where to stop rolling.
Also, be sure to add a little just to be safe when applying the paper to your cone. You can always trim the excess.
Cut out your shape.
Lay down some newspaper for applying the glue (things can get sticky).
Spray along one edge of your paper and stick it onto the cone.
Then you can spray the remaining paper and begin slowly rolling the paper onto your cone.
Once you get the edge, start trimming the excess paper.
Then the bottom.
Let them dry for a few minutes. And you're set!
Instant decor for Christmas!