How to Use Leftover Coffee Sharing is caring!251sharesShareTweetPinYummlyPrint Other Great Tips! How to Remove Grease and Oil From Clothing How to Make Fabric Softener Sheets How to Clean a Toilet with Coke Use Mayonnaise to Remove Water Marks on Wood How to Use Leftover Coffee Next time you have leftover coffee, don’t pour it down the drain. Pour into an ice cube tray and freeze it. Perfect for keeping iced coffee cold!