Drawstring bags are simple to plan and construct and I use them for everything: storing the laptop mouse, Duncan’s gaming dice, portable Geek-Ware cords and plugs, more embroidery, and so on.
I wanted to embroider something for Throne of the Crescent Moon by Saladin Ahmed, which I really enjoyed reading. I actually embroidered it while listening to the audio file of that book.
The pattern comes free in each hardback copy! It is the epigraph at the beginning of every chapter. I xeroxed and increased to about 200%.
More info on the construction, here.