Make cardboard cones in three different sizes. Use plates as templates.
Cut the edges with pinking shears and assemble the cones with a hot glue gun. Try running the paper over the edge of a table to make it easier to roll into a cone.
Make a tree by gluing three different-sized cones together, one on top of the other.
Attach eyes to the trees (one pack of eyes is enough for 10 trees).
Make little candy canes by twisting white and red pipe cleaners together and cutting them to size. Glue the candy canes to the trees.
Punch out little circles of cardboard and attach number stickers to them. Cut a notch at the top of each tree and poke a number into each one.
Make an Advent calendar with silly little tree characters for the kids. Place little gifts inside each cone - one for each day until Christmas Eve. This charming forest will also be a lovely decoration throughout December.