Got some worse-for-wear garden tools on hand? Renew them by submerging the steel parts completely in strong black tea. Start by filling a large bucket with hot water, add the tea and let it steep, and then put in the tools for a few hours. When you return, wear gloves as you wipe the tools down with a clean rag. Rust and caked-on dirt should fall away easily, leaving your trowel, hand rake, and pruners in near-pristine condition.