Okay so watching the stuff from pax-east about nvidia shield. I want to show you how to have something like the Nvidia shiled's streaming options.

What will you need

Mid range Android Phone

Wifi

2 Euros (or 0 if you want to go that way but i prefer to support the developers)

and the most important thing of all This application for your Phone

And This for your Pc

I use this from almost 3 months on the HTC One S and its NICE to be able to lay in bed and play ANY game that runs on your PC
You can setup custom controls for each game
It may be not as good as Nvidia shield but for 2 euros what do you want more (it can stream up to 60 FPS)