Privy Pet of the Senator's Office Shrunk in an airport chapter 15 by Louka31

Your new master, Senator Rosemary, came into the Senate from a military background as opposed to rival senators coming from the civil service, the trading community or the very numerous relatives of the Queen. To show off her power as a former military officer, she could assign you to Hat Guard duty. Basically since Senators from a military background often wore brimmed hats resembling those of American colonists or those of pirates in our world, the dip between the brim and the dome covering the head, formed a trench.

How cutesy, then, to have a shrunken slave-soldier repeatedly circle this "trench" as a guard. True, the guard was not more powerful than that which he guarded. It was the other way around, like how the castle tower was far more powerful than the guard on top on watch duty. The effect then was to emphasize how the master was "a tower of power" relative to the tiny guarding her from her hat.

Another use she might have would be to use you to court other Senators. Or maybe spy on them.