Enjoy a cozy study night at the library. Switch up your study environment, snuggle up in a blanket and enjoy warm refreshments. BYOB (Bring your own blankets). Come in from the cold and enjoy a cozy study night where you can switch up your study environment, snuggle up in a blanket and enjoy some warm refreshments. BYOB (Bring your own blankets). The word “hygge” is a Danish word meant to convey comfort, coziness, charm and security. So to try to make exam season a little less stressful there will be a Hygge Study evening.