For work, I've been advised to wear formal clothes like good-looking shirts with collars and sleeves, black slacks or pants and shoes that aren't sandals, sports shoes or slippers. Jeans and t-shirts are absolute no-nos. But some people at my workplace wore jeans and khaki pants!
Anyway, I guess it's the work that one does and not the kind of clothes one wears to work. What's the use of dressing up like Michelle Obama and end up delivering less than 100% at work? That bothers me a lot actually. I feel kind of guilty when I'm not doing anything or if I finished my work early. But not to worry nowadays because my boss realized that I like to do work so he gives me some to do. My overall performance will be graded at the end of my training so I feel that it's important that I do something every other minute of my working hours not including lunch time.
As for accessories, what do you wear? Yeah, there's the watch, bags, water tumbler, etc. Anyone wears jewelry to work??? A co-worker was really casual once when she wore slippers but maybe the boss didn't notice or just didn't bother.
Well no matter what, looking presentable is still important besides giving your best at work. :)