stirrer

One who stirs; especially, one who is active or bustling.

One who stirs or agitates anything, as a liquid, with the hand or an implement for stirring.

An implement or a machine used for stirring a liquid or the like.

One who incites or instigates; an instigator: often with up.

One who, or that which, stirs something; also, one who moves about, especially after sleep.