Like most shops in Shetland, Skibhoul stores sells everything from aspirin to candles, groceries to gifts. But the cafe is the high light : you pay for your coffee at the shop till, and then go round the corner and make it yourself. You can also buy. Sausage rolls, pies, etc and heat them up in the microwave for a small charge (about5p).
They have loads of reading material, including a wide selection of books to buy borrow or swap. Quite unique. And it has a good view.