First rule: don't use nail polish remover on wood. It actually ruins finishes and leaves new, maybe even worse-looking, stains. Don't panic, though, because there's actually a really easy way to fix the polish-on-wood problem. Just spritz your polish puddle down with plenty of hair spray, let it sit for about 20 seconds, and then wipe it off. You might need to repeat the process a few times, but it's far, far preferable to having splotchy furniture.