Got the basics down? Try one of these as a next step.
Python is a language that is easy to read but used by professional developers. Try one of these fun activities for starting with Python: the first two use blocks, the next two are somewhere in between, and the bottom row is all text-based.
HTML and CSS are the core languages used to build websites. If web design is something you're interested in, that can be a good next step! The top row is short projects; the bottom row is links to longer courses.
Note that for most tools you'll need to make an account.