I would show how to use a rotary cutter and mat and different rulers. I was fascinated to learn how to do a nine patch by sewing strips together and then cutting them, say, every 2 1/2" and having all three pieces already sewn together. I thought that was a nifty trick. I would show the group how to do a nine patch. It's basic and I think everyone loves a 9 patch. I would show them the trick to making a triangle by drawing a line down the middle and sewing 1/4" on each side and then ironing it open. Or how you sew 1/4" all around a square of two fabrics and cut an X and make 4 triangles. Just showing them a couple of tricks really amazes people. It's so amazing when you are new. I would talk about ironing and piecing, how to properly iron when piecing. I would bring a quilt that is done and show everyone the binding and quilting done to it.