I do not know of any specific project to recommend to you but you could try doing some task at codewars.com or any related sites . Try as much as possible to learn and apply new JavaScript concept as you go on. You would begin to understand the concepts better and become a pro in no time.

try to replace a library that you use. I would suggest starting with micro-libs lol.

Try building a blog. In the process you will slowly come to the realization of all the different frameworks you need to play with to build something functional!