Flippy the "Robot" by make-a-roni on Thingiverse: https://www.thingiverse.com/thing:2989080 This is a walking "robot" based on a fantastic design that I believe should be credited to Saurav Chakraborty. Search for "Brainergiser" on YouTube to see his other amazing creations! My version works on the sample principle. I love how this toy moves... it's a seemingly unstoppable machine. I asked some elementary students what it should be called and one little girl suggested "Flippy" because it