yarn
See Eunny Knit!: Techniques: Self-striping yarn
Will I ever get around to dying my own yarn? Probably not. But if I do…
The Recycled Yarn Tutorial
A fabulous, detailed guide on turning a sweater into knittable yarn.
Melanie’s Knitting Rambling: March 2005
Make a center-pull ball of yarn.
Knitting – Make a center-pull ball
Use a balloon to make a handy center-pull skein of yarn.