Buy a Fire Extinguisher
Fires can be tricky, and dousing a fire with water won't always do the trick. Invest in a couple of fire extinguishers for your home, and inspect them periodically in accordance with the manufacturer's instructions. A general purpose A-B-C rated fire extinguisher will provide protection from burning liquids like grease, materials like paper and wood, and burning electrical insulation and components. Keep one in your kitchen and another near your DIY workbench.