Any meals + any impartial NPC = a word of thanks. Neutral NPS could be men and girls, guards, and various bot-like npcs (doomsayer, duke of Lumbirdge etc). Any item (jewellery, armor)+guard = salute from OSRS Gold the guards around. Item is seen just, guards cannot drop it. Player can't offer armor or weapons reduced in level than guards (if guards should wield steel firearms, copper and iron...