Ever since I read Ann Cleeves' Shetland series (there are six books altogether, featuring Detective Inspector Jimmy Perez, and I started in the middle with Red Bones) I've wanted to visit the Shetland islands. The deep knitting tradition on the island even makes an appearance in Red Bones; one of the characters hosts knitting workshops for tourists. And true to the damp, cold climate, everyone dresses in the coziest cabled wool sweaters and hats (in the TV version of Red Bones, anyway).
Shetland now even holds an annual Wool Week, celebrating their textile heritage. We've missed this year's event, but can participate in a little way by knitting Gudrun Johnston's Bousta Beanie, a free pattern for a colourwork hat (Rav link). You can see the characteristic fuzziness of the Shetland yarns in her samples, and the patterns offers several colour scheme options (I favour the high-contrast one, myself), all based on the colours of Shetland.
Images by Gudrun Johnston