Ebikes and electric devices, however, sound to me like something futuristic

There are kits enabling you to convert a muscle bike (push bike) into an e-bike. If you get one with a torque sensor, then it will detect how hard you push on the pedals and drive the motor proportional to that force. So you still must pedal but it amplifies your effort which preserves the natural feel and control of pedaling. It essentially makes the hills go away; a hilly place becomes a flat place.