Projects relate to OS development to put on portfolio for university admission

If you could suggest projects that could be developed related to any OS(operating system) so that I could show in my portfolio during university admission for masters in CS and also provide some resource it would be great.

you can create a bootloader, it would be a good project to present

Friendly Websites

https://igg-games.com/ https://pcgamestorrents.com/ https://pirateiro.com/ ettvdl.com https://dodi-repacks.site/ https://crackingpatching.com/ https://glodls.to/ https://prostylex.org/ https://haxnode.com/ https://freedownloadae.com/ https://www.novahax.com/ https://www.sadeempc.com/ freecoursesonline.me ftuapps.dev