It’s a simple robot that drags a pen around to draw on paper. [Tim] decided to build ... The robot does a good job of plotting out a drawing on a small scale, with [Tim] using it to outline ...

Finish them off by drawing a little black dot in each one. Ask a grown-up to help you cut out a long strip of red or pink paper and curl it around a pencil to make the frog's tongue. Use some glue ...