"Programming Socks are thigh length or “Thigh-High” socks, commonly striped but not as a critical necessity
(See Figure 1 for an example). They have been long-hailed as essential items to improve programmer
performance, code quality as well as job satisfaction.
Other related items that are known to be useful for programming include: cat tails, cat ears, mittens
and mini-skirts."
(page 10 of the pdf, if the link doesn't take you there)