I have used the serger to finish the edges of quilted postcards. It does a much better job than the satin stitch on the sewing machine! But, my favorite project....napkins! No more paper in my house....napkins can be made from those cotton fabrics in your stash! They wash and dry well, and don't need ironing! Cloth napkins aren't just for company
I've even made "cocktail" napkins as gifts. They're smaller in size and made from fabric with "cocktails" printed on the fabric. Use the "rolled edge" settings for these.