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I have small pump mist spray bottle of distilled water with drop of dish detergent. Spray screen and wipe with clean microfiber cloth. Keep this in zip lock bag for travel. If you don't like detergent small amount of alcohol in solution will help cut crud on screen. Most paper products will scratch screen. Even lens tissue should only be used on wet screen to prevent scratches. Anything that could be abrasive should be blown off or brushed off before using lens solution and tissue or lens paper. You can roll up lens tissue then tear off end to make soft brush for brushing off lens. This is how I was taught to clean expensive camera lenses and is safe for reader screens.
Lens paper sold for cleaning glasses I would not use even on cheap glasses.
Clean finger tips on wet surface is ok for cleaning real dirty surface because you can feel any abrasives and stop. This is how I cleaned motorcycle and diving goggles and face plates only with undiluted liquid dish detergent then rinse off flowing water. Too much water for readers, tablets or computer screens.
Dish detergent used for cleaning like this helps prevents fogging of lens.
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