If you want to wear sandals this badly, move to a warmer climate.
Novelty ties, shirts, boxer shorts, etc.
Sports watches. Your days of pretending to be a deep sea diver are over. Wear classic stainless steel, gold or leather strap watches.
There is nothing lasting about novelty clothing nor does it project a stylish, put together image. Leave the smiley faces, hearts, reindeer, animal and various other prints on the racks of the store where you found them.
Just because you are wearing a designer’s name on your chest, sleeve, or wherever, doesn’t make you stylish. Keep it understated and simple.
Backpacks at the office
Unless you are a student or are hiking up a mountain, leave the backpack at home.
Chunky shoes
These were okay back in the 90s, but the big chunky shoes, especially those with square toes, should be retired at this point. Choose something classic that stands the test of time.
Shiny or glittery shirts and suits
If you are looking for something to go out nightclubbing in, I can think of much better choices than those that are glittery, shiny and ultimately tacky. If you are at a loss, try a form fitting black t-shirt or black dress shirt which can be worn with jeans or trousers and dress shoes or casual shoes.