I just realized that I teach a class on Saturday! It's at the Central Utah Art Center and I'll be teaching how to make a clam shell box and we'll learn techniques on making other boxes as well.
The class is $30 and that includes all the materials for your box (I'll precut all the book board for you so we'll focus on other things instead of spending the few hours cutting.)
The class is from 10am - 1pm on Saturday, October 16th at the Central Utah Art Center in Ephraim, UT.
I'm sorry I don't have a photo of a clamshell box. I'll just have to post photos of the ones we make in class :)