Seemingly endless case files of paranormal entities and otherworldly objects possessing strange powers can be found within the archives of the SCP (Secure, Contain, Protect) Foundation.
This is a series of fictional works - it's all very old news to those of us who have been reading Creepypasta for a long time, but I just remembered it the other day and felt that anyone with some time on their hands could do with a dig through the site.
A few that I've read in the last day or two and particularly enjoyed:
504 - Critical Tomatoes (this one is actually really funny)
515 - Sleeper
025 - A Well-Worn Wardrobe
014 - The Concrete Man
543 - Noise
Have a dig through a few thousand tales
here and share whatever cool stuff you find.