Mesh Coffee Filter (Freiling)
Freiling 'Cup O'Coffee' filters make astounding pour-over coffee. The mesh filter is gold plated (yes, fancy) and will last for years. On a practical level these are great for offices where plungers and the AeroPress are too fiddly. You just sit it on top of your cup and pour the coffee through.
Ideally, grind your coffee the same way you would for a paper filter. That's finer than ordinary mesh filters normally take, but this is no ordinary mesh filter.