Flat panels are delicate things. Use the wrong cleaner or cloth and they can easily be permanently damaged, leaving streaks or scratches that you'll have to look at for years. Sure, you
probably have some stuff laying around that
shouldn't hurt the screen. But why take the chance.
For under $5 you can have a compact bottle of cleaner and a soft reusable cloth that you know will do the job without harming your screen. See clearly. Keep one at work for your monitor and one at home for your big screen.