The next robot crawling through your gut could be a gummi bear
 

The future of robotics is decidedly squishy. We've already seen gel-based 'bots that can catch fish, mimic octopi and even ones that can keep your heart pumping. And, if the researchers from Switzerland's EPFL are successful, they could soon be crawl...

https://www.engadget.com/2017/03/13/...-a-gummi-bear/