Knot cushion XL, from Design House Stockholm, has a playful design in the shape of a knot. Thanks to its generous size, this cushion can be used as a pouffe. By binding together a long, knitted tube, Icelandic designer Ragnheiður Ösp Sigurðardóttir has created a dense knot that's as comfortable as it is beautiful. The Knot cushion comes in several different colours.