My sister has six kids, each with multiple teachers. She likes to recognize each of them, but it gets expensive pretty quickly. She came over yesterday with two of the kids and we cranked out 11 of these -- I only got pictures of two of them, though ;(
The RSVP pens are made with a strip of paper (thin is best) (3/4" by 3 1/8") inserted in the barrel after shaping it around the ink tube.