With that in mind, I spent a very happy afternoon using some Debbie Bliss 'Cleo', which is a cotton/acrylic mix that I got from LoveCrochet.com, which has a great, smooth finish to show stitch definition, and made a samples board. It put me in mind of butterflies all pinned out! It's a really interesting excercise in what can happen when you change one little part of the process- a single crochet compared to an extended single, double crochets worked between the posts instead of the stitch.
I could literally have done this for hours, but had to stop somewhere! Can't wait to show my students.