Here’s a pretty advanced one. Smart skin…designed for amputees to help return certain senses relative to feeling pressure, temperature and dampness. University of Glasgow has developed exactly that and is using solar power to fuel the system, providing greater independence and portability by removing the need for a connected power source. “Graphene” is the secret…a flexible material that can now cover covered with a flexible with durability greater than that of steel, and is electrically conductive and transparent.
The material draws and converts power from the sun’s rays sufficient enough to power to support movement of prosthetic hands. While the power is used in real time, they will eventually determine a way to store it efficiently when sunlight is available.
Thinking bigger picture here….you could create autonomous everything….from prosthetic limbs to life like pets to robotic workers in the fields based on advancements in bendable electronics and sensing technologies.