Our most recent project is Lazy Stitch Indian Beadwork. We'll make an arm band using traditional methods. It should take us 6 sessions, from cutting the leather, waxing our thread, drawing our designs, to actual stitching (and humming Home on the Range all the while *wink!*)
Here's the book I am using. Truly inspiring. Please check it out at the library and let your little boys (in particular) dig in!