Thanks, NZ! I love Becky's patterns for scraps. There are several I have already made, and many more on my bucket list!
I had lots of 2.5" squares from the three years I was in the Birthday Swap, plus I cut my project leftovers into squares, too. The tricky part about doing the shading is having enough dark, medium and light value blues. But you don't have to make it shaded... just random would be pretty too.