Oh dear, it was just warm and now - suddenly and hardly to be expected - autumn is here, although the "to-sew" list for the summer was only just ticked off. Now it has to be quick, because the nights are colder again and your little one is suffering from frostbite?
If you still have fleece, a jersey snap, a zipper and a little something to tie with, you can get started right away.
How exactly you can proceed to sew a quick, improvised but well-fitting sleeping bag, download this tutorial. You can find it HERE.