1-1/2” square sewn diagonally across one corner. Here is a photo of 15 blocks I finished yesterday. I didn’t use plaids as were done in the tutorial, but just left over 2-1/2” squares from prior quilting projects. I try to keep my leftovers in Ziploc bags: 2-1/2” squares, 2-1/2” strips, 2” srips, and 1-1/2” strips. I also have a bin of 5” strips and squares for charm quilts.
Most of the time I use muslin for the backs of my quilts, and I cut the excess into whatever size strips I can, so I have a Ziploc bag of 4-1/2” squares, also, as that is a size I use for several of my favorite quilt patterns, including this one, the last of my favorite scrap blocks, the Scrappy Snowball, and here is the link to that quilt on my blog:
I have joined blocks made up of sixteen 2-1/2” squares, set 4 across and 4 rows down (two blocks shown in the photo above). This is the best pattern to use up ANY colors, including the medium tones. The “snowball” squares are comprised of fouir 4-1/2” muslin squares with a 2-1/2” square sewn diagonally on two opposite corners, then put together so that the centers are all white and the prints come together to form triangles on each side of the “snowball” when the blocks are put together. The photo shows one square with the diagonal corners attached, and also what it looks like with the four squares together. These are joined alternately to form the pattern.
Here is the photo of the first one I completed, the one on my former blog, after it was bordered and quilted. It was a Christmas gift to my granddaughter, Ava, a year ago.