SCP Foundation

The typewriter in question, SCP-XXXX would require use every 10 days, or it begins shooting fireballs made out of crumpled up paper. When used, Papers typed are heavily altered, and gain anomalous properties based on what kind of document was originally typed, as well as what words were used. These are classified SCP-XXXX-1. The Typewriter itself is a "pay to use" typewriter( and no, this is a real kind of typewriter, and the kind that bradbury used to write his manuscript. I did my research.) and would have several other secondary properties. As far as the instances of SCP-XXXX-1 go, Sentences typed onto an instance manifest as the paper is read. Upon the entire instance being read, manifestations cease (Although effects on the environment remain.), and the person reading the instance, along with the instance itself, spontaneously combust into flames at temperatures measuring 451 degrees Fahrenheit quickly reducing them to ash.

I think if all it does is shoot fireballs, it's not going to be interesting enough to go over well. A typewriter possessed by an author is a decent starting point, though, and the "pay to use" aspect could give you an angle; I like the idea that the spirit inside the typewriter is trying to charge people for writing lessons or something, even though its advice is all badly outdated, and throws tantrums when it doesn't get to (maybe that's where the flaming paper balls could come in - it's a pretty silly image, which could be a good thing if the article leans toward the comedic side in general.

I think figuring out some interesting personality for the ghost is the key to this; "haunted typewriter" would be hard to pull off as a serious or scary article because haunted objects that do bad/scary things are a very common horror story trope that won't have an impact for readers by itself, but it could set the stage well for a more subtle, unsettling, weird kind of ghost.