Draw something with your mouse inside the pink circle, click "I'm done" and enjoy! You don't have to keep your mouse button pressed, just clicking will make straight lines. The drawing has to be a single line, so your starting point and finishing point will automatically get connected.
The whole idea was taken here: https://vimeo.com/173067576 I found the hamster animation here : https://scratch.mit.edu/projects/161345098 Thank you @Marcus-Cactus
