Many engineers consider a low voltage DC permanent magnet motor as something they would find at home in tools and appliances. This is the more conventional iron core DC motor where the windings are wrapped around an iron core with the magnet on the outer casing. Often this as the first type of motor we are introduced to in our science class in school.
Nanogenerator consumes CO2 to generate electricity
Nice to see my my views being backed up by no less a figure than Sabine Hossenfelder https://youtu.be/QoJzs4fA4fo