I've been at perhaps 50-60 tech interviews since my "IT career" started at 2008. And I come to think that appearance and attire, though are not the top-important, but really have some weight :)
So for next interviews I ordered t-shirt with custom picture (see below).
Is the sarcasm too obvious?
The matter is my background is heavy in Java and BigData. Recently I grew curious about Golang. I want to try migrating to this field for few years. But still I have some doubts about the language (especially about lack of conditional expression) - so I encoded a bit of irony in the text above the image.
P.S. Please don't mind ushanka and balalaika - the picture is taken, I believe from stuff of local Golang conference - so they are just "national symbols".
P.P.S. Sorry for cat. She wanted to get into.