There are several patterns on the Missouri Star Quilt Company that will use any size square. For what layer cakes cost, I would square them up and adapt them for one of those patterns so they will not be wasted money. I made the Big Star quilt from MSQC in Christmas colors and it is beautiful. The10 minute quilt block from Suzzanne (somebody) would also work with any size block. It's kind of a lost savings to have to recut them but better than throwing them out;.