I decided that as my gift to my Mother & Father in Law, as well as my sister-in-law, I would make heirloom cushion covers out of the linens. I used a large pillow case with crocheted lace trim for each 16x16 cushion (embellished with a white handkerchief).
For the rectangular cushions, I used a beautiful piece of vintage percale sheeting embellished with an embroidered place mat that had lost the rest of its set and doily.
I sewed each envelope style, with a 1" knife edge. I sewed a row of bridal button loop tape down the back for an antique-look. Envelope style cushions are really easy to make - you can "google" a pattern or just wing it like I did.
I really love how they turned out, and really feel like I was able to "collaborate" on a project with Grandma Winonna. I can't wait for them to open their gifts on Christmas Day!