Use Old Christmas Cards to make these placemats! Cut or tear the fronts of old Christmas cards from the back. Discard backs. Lay a 12" x 18" piece of clear contact paper sticky side up on your work surface. Arrange card fronts to completely cover the contact paper, overlapping and pressing them right side up on the sticky surface of the paper. Cover the front with another piece of contact paper. Trim. Glue on a border of ribbon if desired.