What is the dress code at your workplace, and does it make you feel less or more productive? How does it affect your mindset? Do you wish that you could wear something else?
I've only had a full-time position at one company, whose dress code is business casual (khakis, polo/button-up shirt) with casual Fridays (jeans). The business casual code keeps the environment reasonably professional, but I'm curious as to how other developers feel their environment and productivity is affected by being able to wear t-shirts/jeans/sneakers or suits and ties.