I love hearing how God takes care of a problem such as yours!
Now, I’m not sure that their was inherently evil in an object, especially if the person concerned-in this case, you wasn’t using, or planning to use, it in an occult way. But Ouija boards do seem to be around, quite often, when a person does come under demonic oppression!
So, I can’t tell you how glad I am that you got out of that house, and nothing has seemingly harmed you. Thanks and praises be to out Lord and Savior, Jesus Christ.
That being said, I’m glad that you didn’t steal the object, or destroy it, without the knowledge of your hosts. It’s their right to keep anything they want in their home, and you would have been stealing, despite your noble intentions! So, you were able to remove yourself from the vicinity, without doing what is quite a grave sin. Please, see this as a grace from God, and try to keep it in the past. But, if and when you feel strong enough, you can pray for these people, as, in all probability, they need it!