Share your favorite project from the past

My crush Project is about a Web in XR.
Just taking look into some famous website like Amazon and GitHub , the way they represent and showcase there skill is on another level.
Just when I personally visit there website I got an idea what if this website can be a big store in imaginary world where we can interact with AI and solve our doubts and our real based problems.
The way I thought is something different but it is my dream even if some company had already made this.

I love the 3D Metal Printer project: www.patreon.com/3dmetalprinter
Is a low cost 3D Metal Printer for developing and low income countries, using an electron beam to sinter the metal powder

The goal is to make 3D Metal Printing more affordable to the general public, hospitals, small institutions, organizations and companies around the world. Specifically for developing and low income countries. This project fills a gap that no open hardware successfully fills.
3D Metal Printing is an impactful tool. Making it more accessible will democratize science, engineering and empower people. This low-cost hardware will be able to accelerate innovations in and lower barriers to scientific research.

For hospitals located away from major cities, 3D Metal Printing will be practical when supplies run low. This is especially important in farming communities where patients from the nearby fields who come in with work-related injuries could be outfitted with custom splints that are 3D Metal Printed as needed.

Entrepreneurs will benefit from this project. Especially early stage entrepreneurs that are not yet financially secure enough to easily afford a 3D Metal Printer. Increasing access for these entrepreneurs ensures greater representation and impact, paving pathways to get these deep-tech innovations more efficiently into the market. Adopting open-source approaches play a key role in this process. The 3D Metal Printer design, plans, videos, schematics will be open and free for any person in the world.