We are doing a very low budget traveling children's production of Charlotte's Web. I'm looking for ideas of how to do the web and the writing effect. The director was suggesting a rope web with plexiglass in front of it and a dry erase pen. Not exactly what I would call a cool trick. But it's cheap! I'm hoping to figure out a better trick that I can afford. Any ideas of how to do this for only a couple hundred bucks?