I keep learning new things about knitting. The latest is nice and lazy - an open weave that's very fast to knit. I found it through a pattern on the yarn ball band of the berry-coloured wool in the second picture.
You knit wrapping the yarn around the needle twice for every stitch (i.e. in between stitches). In the next row you drop the extra wraps from the previous row, and so on. I like the light weight and the wave-like appearance. I used the blue wool for a thin short scarf and made a cowl with the other wool by knitting a scarf and joining the ends.
Whenever I saw a knit like this I used to think it had been made with gigantic needles... Now that mystery has been solved!