A Puzzling Stash Buster!

Oh how I love this stash buster!!!  What a great summer project.  Small pieces, portable, colorful, quick..what more could you ask for?  This Puzzle Pieces Pattern is on Ravelry, of course, for $5 (yes, it's a paid one but worth it!). I'm going to pull out all my worsted weight stash yarn, go through the colors, pick a palette and one unifying color (which I will probably buy) and get going NOW!  There are corner pieces, edge pieces and middle pieces.  Fun!  The knitter who did the puzzle pieces pictured slightly felted hers, which is a cool idea.  Also, check out the other projects posted.  One knitter made a quilt out of hers by backing it and inserting batting.  Oh, I've got it!!!!   I think what I might do is make a diaper changing cloth that just rolls up.  Wouldn't it be fun to do the puzzle in  Blue Sky Alpacas' Worsted Cotton (organic, oh-so-soft and washable) and back it with one of judipatuti's awesome laminated fabrics (also machine washable)?  Put a contrasting bias tape around the edges and a grosgrain tie.  I'm on it!