I saw these today on Martha Stewart Craft of the day. I always have a list on the go, and I think these are a nice way of stopping them drifting around the house - also a bit eco chic! I think you could use the sewing machine to do similar, but don't put too many pages in or you will break the needle. (I know this from experience as i make alot of notebooks for my 5 year old daughter - apparantly a girl can never have enough notebooks!!)
Talking of eco chic have a look at a lovely blog called orange and pear. We met Jennifer on a blog e-course we are doing and thought her blog was very stylish and had a lot of tips for being green and chic at the same time!!