A few years ago, my kids' school did a funraiser that involved putting their artwork on a variety of items. Mugs, pillow cases, boxes etc. were all choices as well as fabric squares. I ordered the fabric and finally got around to finishing them. Part of the reason it took me so long is I was waiting for the school to do it again, so I would have more squares to work with!
Well, it became apparent that this was it. So I asked the kids to pick out fabric from my stash that they would like me to use to frame their art. I sewed them separately in case they wanted to hang it in their rooms. I pieced the borders and then sewed, right sides together, around the edges. No interior stitching so I can actually stuff each one and make them pillows later on, if they want to.