"Use a toilet seat cover to blot the oil from a greasy face."
So the idea behind this suggestion is that the thin, dry tissue like seat covers in bathroom stalls can act the same way as facial blotting papers can. Sure the paper texture is similar enough, that it might just work. That's not the problem with the suggestion though. So what is? Well it's a commonly known fact (or at least I assumed it was) that there is a spray radius from toilets. It's one of the reasons they suggest you always put the seat down before flushing. In fact, the Mythbusters did a show on this. Their results? It's true. Not only that, these seat covers are usually found in public restrooms, where there aren't lids for the toilets.
So you're best bet is to skip on trying to use these are facial blotting paper. Stick with using rice paper which works great and can be bought online for fairly cheap.