Pick Pocketer
With this mod, you can steal items from mobs and other players. To do this, simply sneak up behind your target in stealth mode and right-click while in this state.
When stealing from mobs, random loot appropriate for that creature type is generated. Additionally, you can take their weapons and armor.
Stealing from other players gives you access to their inventory, where you can take only one item per attempt.
Each successful theft has a configurable chance of notifying the victim about the incident.
There is also a cooldown period after stealing an item, the duration of which can also be configured.

