Shackes: Object that can be placed on an KO'd hearthling which will allow you to guide him allow the land just like you'd handle an animal. Then you could tie him up to a post or whatever and the hearthling wouldn't be able to move within a certain radius, effectively turning that character into your slave. For instance, you could tie him to a post in a farm and be like: "hey, you either farm or you don't get food".
Whips: In order for the hearthling to mantain his shackled status he has to be whipped once every 8 real time hours or he can break free.