I have a "standard" project to work on for new languages, which has enough complexity to get me coding things idiomatically by the end, but since it's something

I have a "standard" project to work on for new languages, which has enough complexity to get me coding things idiomatically by the end, but since it's something I've done before I don't need to worry much about the topic at hand. The project is a hurricane modelling and visualization program, which is pretty specific to my experiences, but having that to riff on has been my way of learning scala, python, c#, and (soon, in theory) Go.