Intelligent items, if not thought through, can come across as flat. Roll on the table for a unique trait that may make them more flavorful as an NPC.
1. Obsessed with its Ex. The items doesn’t let a day go by without informing the character that its last owner was way better/stronger/smarter. They even hold it wrong compared to the Ex.
2. Disgusted. The item is appalled that people need to eat, drink, and sleep. It finds the act disgusting and lets the hero know it every time.
3. Suicidal. The item is very very old and seeks death. Will encourage the heroes to take any action that will lead to its personal destruction.
4. Story time. The item will cause a ruckus and prevent rest unless it is told a bedtime story. It was not enchanted to know how to read and really loves stories.