Thanks for your thoughts MTS - my initial thought before I got the book was to PP but I'd only do that if I was going really tiny. The swatch will work - I tried it on scraps - you line up the diagonally opposite corners on the seam line and cut a right angle, then turn the square ruler and cut the rectangle the size you want. This to me is more straightforward than individually cutting all the triangles where you'll have at least one bias edge anyway. I'm not really bothered about bias - when I make my One Block Wonders I'm working on the bias all the time, I've learned to be gentle! The only downside I see is that I won't get all my individual fabric pieces to play with on the wall - I'll have to make choices by rectangle block. :-D