For each hour they "make", they earn "Doubloons" which they can spend on things they need for more projects - like soldering irons, Raspberry Pis, Framework Laptops, and more.
There are about 900 teenagers coding each day and working on different projects. He might be inspired by some of the things they're working on, like this personality quiz (https://personalityquiz.kittycat.hackclub.app/) and this overly aggressive cat-themed study timer (https://study.sticks.gay/).
One good beginner activity could be making his own homepage, which he'll earn a boba tea for: https://boba.hackclub.com