I'm really digging this retro-styled reversible Cyber scarf ($109) by Seattle-based KnitYak, maker of "generative mathematical" machine-knit goods.
The yarn used is a 100% machine washable acrylic in bright green and black. Ships with source code in Processing for the pixel native cyber pattern that is knit into the scarf.
Do go check out KnitYak's other scarves -- the one with the Macintosh IIfx icons is divine.