I found a nice vintage fabric in my stash recently, and decided to sew one of those Japanese knot bags out of it.
For the lining, I used a scrap piece of striped cotton fabric, which had been in my stash for ages at well.
I'm quite pleased with how it looks, but as the vintage fabric I used is rather heavy, I think I'm going to make the long strap a bit more narrow so that it will be laying smoother on my shoulder.
I would also like to make another one, lengthening the strap to reach diagonally over the chest and using a medium weight cotton fabric instead.
If you would like to sew a knot bag yourself, the pattern I found when googling about it is here - the explications are in German, but with clear pictures and a scale pattern. You'll find a smaller 'handbag' version with instructions in English here.
(German summary: So, jetzt habe ich mir auch eine japanische Knotentasche genäht - ein genial einfacher Schnitt, geringer Stoffverbrauch - man könnte auch Reste zusammennähen - und sehr praktisch!)