Time for a new fabric cut--5" strip bundles. Windham has them among others. I love the 5" size, as you may have figured. The pattern uses 20 5" strips, or 20 Fat Sixths (2 of my Bloom Bundles of 10 12"x22"), or 14 Fat Quarters (Hoffman Batiks bundles, or an 8 bundle and a 6 bundle). Options galore for fabric, including scraps, which can be whole or half strips.
I like the look of the rectangular Four Patch, and of course, the spacer strips. I think the spacers are a great way to offer some relief from the busy prints. And here we are with the Hoffman Jasmine Fat Quarter bundle.