How have kettles changed over time?

Kettles have evolved significantly from their traditional stovetop designs to modern electric models, enhancing convenience and efficiency. Early kettles were often made of materials like cast iron or copper, while today's versions utilize stainless steel, glass, and durable plastics. The introduction of features such as automatic shut-off, temperature control, and rapid boiling capabilities has made them more user-friendly. Additionally, aesthetic designs and smart technology integration have transformed kettles into both functional appliances and stylish kitchen accessories.