I've dug out a cushion cover I made last summer from our old flannel pyjamas. Its super-snuggly, and has a handy pocket for love notes, the tv remote, or, in my case, thread trimmings to keep safe and out of the mouths of babes.
It was a really good beginning project. I learned machine basics – how to wind bobbins, thread up, change feet and needles (oh, and not to sew over pins) and i also designed it myself.
Anyway, here’s the method, complete with seam allowances, and some piecing diagrams that would have saved me having to puzzle it all out on the bed and disturb the cat.
Tutorial here: Upcycled snuggle cushion