There is a very cool Canadian lady named Tracy Martin who makes wonderful knitting-themed metal sculpture. Her sculptures are being shown right now at the Toronto Outdoor Art Exhibit (July 7, 8 & 9). If you live near there, you should go see them!
Or, click here to see her sculptures on her website, where it says
"Tracey's knitting inspired metal sculptures work on two levels. Fisrt, abstractly as a geometric arrangment of spheres and rods. Secondly, symbolic as in relation to the act of knitting, the continuity of yarn stand from project beginning to end and the contemplative nature of knitting and the thoughts and memories it triggers."