Amazon.com: Pro Mael Disposable K Cup Coffee Filters 360 Count, Coffee Filter Paper for Keurig Brewers Single Serve 1.0 and 2.0, Use with Resusable K Cup Pods, White: Home & Kitchen
Perfect Pod Single Serve Paper Filters 100 Count Pack of Paper Filters with No Lid - Walmart.com
Paper filter vs. metal filter: Which makes the best cup of coffee? - CNET