Look for a project from Github and start replicating and studying how things are being implemented.
Benefits:
- replicates real scenarios like, ability to read and learn from other's work.
- measures how well, how far, how deep you understand the things that you are currently learning.
- track the learning progress.
- if you successfully replicated and most importantly, understood the project from ground up, you will have a working app that you can show to them.