I've been making this
blanket cushion for ages (already started here and from yarn that didn't make it into here). Started as a blanket but rapidly realised I wouldn't have enough to finish using up the yarn I had (four full 200g balls) due to the stitch (single crochet) and the hook size (3.5mm). Ah well. Makes a nice cushion. I originally started it for the cats but a friend of mine was horrified that I'd make it for them and asked (very nicely) for it instead. Still hasn't been delivered, mind!
Due to its unusual shape, I sewed an inner in some stash fabric and added buttons to hold it closed.