While Google ChromeCast and products like Xiaomi Mi TV Stick supports wireless screen-sharing and wireless streaming, they come with a caveat that may not make them the best solution in all cases
- An mobile app to control them
- A google account to use them
Especially the google account makes it a no-go for me.
However, if all you want it to stream Netflix etc., both these products might be a better option for you.
But if all you are interested in is a wireless screen for your pc or mobile device, there are other, simpler options