As it says in name, we need additional option – Throw item. It can drop item not on the tile you stand but next to you. Uses numerous: trades, giving stuff to repair when training armor / sb skills, or simply bait someone to pick up items which.
And if this is not feasible, make an option to throw mud / tomatoes at people. And hopefully it would make their avatar dirty for few mins unless someone washes them with water or they go on shallow water.