The Nubia region is currently divided between Egypt and Sudan. I've saw a Facebook post about the nonexistence of a flag for Nubian people (even though proposals exist). So this is my take.
I've designed the following design:
A white crescent on blue background is reported as a symbol of Nubia in European medieval maps. The blue color can also stand for the Nile, while the crescent can represent the predominantly Muslim population. I've added a golden-yellow stripe on fly, representing the desert, but also the old glories e.g. Kush.
I'm not a specialist in Nubia, so I can only hope that my vision is correct. As a design, I like it very much.
Comments and suggestions are welcome.
My computer is starting to work again. So posting frequence may re-normalize.