I'm at home waiting for a delivery so I thought I'd clean some things I keep putting off. My teaspoons although clean have a brown stain on them. What do I need to do to get them shiny again? Also the laptop screen, however many times I tell my children not to touch the screen, they do. Surprise, surprise, their hands are not always pristine. I understand I'm not supposed to use any products on it. Help and thank you.