Zig-zag Comforters

If you are trying to break up the monotony of horizontal and vertical lines in a bedroom, patterns are a great way to go. You could introduce these patterns through the use of wallpaper, but this involves a fair amount of effort. Patterned rugs, curtain or throws are an easier option. There is also the option of a patterned comforter. A zig zag design on a comforter can really make quite an impact in a room, especially if these zig zags are brightly colored.
Zig-zag Comforters:

Zig-zag Comforter pictured: VCNY 8 Piece Comforter Set Zig-Zag (Marcella) (King Size, Berry/Pink) by Victoria Classics