Turn the pot upside down - or, if using a balloon, cut off a small opening on the top for filling with candy. Then turn upside down. Roll a piece of thin cardboard into a cone and attach to the bottom of the pinata (the top, turned upside down - get it?) with newspaper and paste. Let dry completely. Poke four holes in the rim of the opening and run twine through in a cross pattern. This is to hang the pinata later. When eggs and pinata are dry, use a hot glue gun to attach the eggs, covered side in, to the pinata. Start at the tip of the cone and work your way down on a spiral, trying to cover the pinata as closely as possible. When all are attached and dry, carefully turn pinata right side up and hang with the twine outside somewhere.
Use spray paint to paint the pinata grape-colored. This pinata has leaves made of cardboard covered with green crepe-paper, which is a nice touch. The hardest part is transporting the pinata after it is filled, so if possible make and fill the pinata on the same site where it is to be broken. Once it is turned right side up and filled, a strong person has to hold it at arm's length so the eggs don't break until it can be strung up.