GF cone idea: Heat several tablespoons of oil in a pan. Fry a small corn tortilla on both sides, until it just begins to stiffen then remove from heat, shaking gently off the excess oil. Immediately drop onto a plate of cinnamon-sugar, coating both sides. Then, flip it over to a flat surface and roll it into a cone shape. While it cools, place it top-down into a narrow cup or glass, so that it has a form to hold it's shape.
Construction theme birthday cake. Chocolate cake with chocolate mousse filling and chocolate buttercream frosting. Cut away a wedge for the pit and dome up the opposite side for a hill, then use crushed Oreos for dirt. Orange fondant from Michaels to form cones and name circles. Small tractor toppers from Amazon. Rock chocolates from World Market.