Hello @gunterno :)
We are working on supporting other environment (like colab, jupyterlab...) so it's hard to give you a part right now.
Is there anything you want to contribute especially? We recommend these parts to contribute.

1. Bug fix: Find bug and Fix bug
2. Enhancement: Give an idea to improve Apps and Implement codes to support this idea.
3. Documentation1: Documentation & Tutorials for visualpython (with gitbook)
4. Documentation2: Writing articles(on blog) to inform Visual Python to other users.

We appreciate your contributions and want to know which part you prefer :)