Once you complete the first 27 projects, you can move on to the 27 different beginner JavaScript projects that I found in Bluelime's JavaScript Beginner Projects course.
Most of these will be pretty simple JavaScript projects if you've finished the first 27 JavaScript projects. So, simply see how the project functions, download the source HTML and CSS files and then code up the JavaScript functionality.
JavaScript Projects 55 -58
Having completed John and Bluelime's beginner JavaScript projects, you should be well equipped to complete Andrew Mead's four projects from his The Modern JavaScript Bootcamp Course, if you haven't done them already.
You should be able to breeze through each in a few hours since they use features that you've seen time and time again in the previous 54 beginner JavaScript projects.