Service Clouds: AWS, Azure, GCP, etc.

Hello, I want to create a project showcasing my Cloud platform skills, I don't know what should I host there? I can't just host random open source projects there and call it a day since it will not utilize all the functionality of the Cloud instead it will just utilize a single EC2 instance and that's it.

​I have an idea though, I am thinking about making a youtube video using Java + yt-dlp so basically I will use Java (Spring boot) to create the API and yt-dlp to actually download the videos. It will also cache the videos so it will be utilizing S3 bucket to store/cache the downloaded youtube video so that when another person requests the same video we can just sent the video from the S3 bucked instead of fetching it from YouTube servers. so far this is the thing that came to my mind, This project will utilize EC2 instance and S3 bucket. if anyone has any good idea please do share 🙂