5 pillow cases sewn together, insert pillows.pinner said: Use a twin sheet folded long ways. Sew 5 sections to the size of pillowcases and slip the pillows in. Leave each 'pillow compartment' end open so the pillows can be removed and washed.
splityarn calls this the "Easiest Knitted Sweater Zipper Install Ever" and it looks like it might be. I haven't tried it yet but I'll let you know if I do - my one attempt to put a zipper into a knitted sweater came out OK, but not this nice.
Ever wonder about all those feet that came with your sewing machine? This site has fun tutorials for everything and tips for the experienced and beginner alike. How to sew flat felled seams. This site has tutorials for other types of seams too.