Giant Club

Located in possibly multiple locations, the Giant Club may appear to be an item worthwhile with an incredible damage stat, but unfortunately the item can't be added to the player's inventory. (Despite the "take" option shown in the image) While useless, the item can still be dragged around like any other world item.

The one found in the picture was found in Tumble Arch Pass, right by the stone bowl atop the small ridge. Damge, like other weapons, is random.