To be completely, exuberantly excessive on this topic—like me!—you could bake gingerbread hornbooks. I bought a wooden mold from this web site. The accompanying booklet is actually the best resource for kids that I’ve found on this subject! Checking back recently, I discovered that the craftsman who makes the mold now sells hornbook replicas, too. Interesting to look at but perhaps too pricey for a classroom purchase.