12" circular needles! Yes, you could make a sock on these. Or possibly a wrist-warmer. Needles with a built-in discretion factor - great for knitting in the pub. Or at the park. Or under the desk at work.
This is my fledgling baby hat, knitting up so much easier than on dpns. They're made of stainless steel and cost £5.95, and IMO are well worth it for the satisfaction and ease of far fewer pointy bits.