Shorts and a shirt there, which is what I'd wear at the office, I've never had a job that required a tie and starch (that said, my stint in Virginia was very anti-shorts, I'm not sure why men's knees are that fearsome to the southern constitution, there seems to be a general thing about shorts in the workplace).
My main effort is, of course, putting on clothes. I do have a routine than involves starting at about 9.15am and generally calling an end to proceedings before 7pm, which matches what I'd do if I went into the office. I work a couple of hours beyond my seven because I faff around doing this, but I'd do this in the office too. And stuff needs to get done, galactic subjugation etc.
I am lucky enough to have a big office with a sofa and stuff, plus a balcony (admittedly with a view of the garage and the Famous Levitating Tent).