Thanks Joe'smom and Petthefabric.
It's just HSTs, Pet, and I tend to keep my construction quite simple. I also didn't strip piece because my fabric pieces were unpredictable and irregular sizes (all were rectangles, though). As an example, there were three different swatches of yellow in the sample pack, but I don't think I got more than two 4" squares out of any of the pieces. I know that there are strip piecing methods for HSTs although I've not used them, but I don't see why you couldn't. I got the pattern idea from Missouri Star - Jenny Doan used layer cakes. I cut 4" squares and trimmed down so my HSTs ended up at 3" finished.
I've attached a picture of some of what I have left over. There were two pieces of the "theme" fabric - both that size, and everything else was smaller - right down to about 4" x 6". There were about 12-14 different fabrics in there in total. I have so much of the theme fabric left because I was going to use it for binding until I changed my mind and added some to the quilt top. :-)
And some sad news re: the backing (not pictured). I was showing the fabric to my mother and it just felt a bit strange so I decided to do a burn test - it turns out it's polycotton. :-( It's such a shame because it would have been perfect for this quilt, colour- and theme-wise. However, I've decided I like the quilt top too much to spoil the finished product with a bad backing. The silver lining to this little grey cloud? I now have about 3m of stash fabric that are going to find another home and/or purpose. That's good, right? :-)