I have had a zip up pouch made by a work at home mum to hold my slimming world book and card.
I had in my mind what I wanted, but I couldn't find anything that met the requirements in the shops.
I came across Homemade by me with Love on facebook and sent her my requirements. Within a day or two she sent me the fabric choices and made my requested bag, complete with card holder in the lining.
It is much nicer than my Slimming World plastic folder which after just 5 weeks of ownership is already tattered.