I did a fair amount of knitting on the tiger hat over the weekend and it became obvious it would be far too small for either of my kids, at 40 cm diameter (unstretched, but it didn't stretch enough either). So I frogged it. I had done swatches in the yarn, but not in pattern; I guess this just means I knit colourwork a lot more tightly than plain colours, which I'll have to remember in future. I'll try going up a couple of needle sizes and see what that looks like, but probably not today.