What did basket makers wear to work?

To carry things in it when shopping and when children go easter egg hunting and also for other things

they made baskets for trade items.

In the US, assuming that he really deserves that title, a lapel pin with crossed golden keys crossed over a round US flag symbol emblazoned with gold letters USA and further marked Les Clefs D'Or,...

Usually scientists use a: lab coat (White) Safety Goggles/Glasses and sometimes a pair of sterile gloves.

An accepted norm is formals. A banker is supposed to be an observer and not getting observed. A banker is supposed to be in peripherals and not in the center, as he is always risk averse.