cmd as admin
netsh wlan set hostednetwork mode=allow ssid=Test key=password
netsh wlan start hostednetworkopen adapter settings
share the one similar to this "TAP-Win32 Adapter V9" with the new adapter you just established.
The "TAP-Win32 Adapter" is set up by PIA and will not be active until PIA is started.
This does work when set up properly and the VPN IP will be reflected on devices connected to it. Speed will be reduced by the effectiveness of your wifi adapter but may still be suitable for streaming.
https://www.privateinternetaccess.com/forum/discussion/316/share-private-internet-access-vpn-with-all-your-wireless-devices
Edit: Thoughts on Windows shared WiFi
I was able to get Connectify to share WiFi and connect with a laptop but the IP was not masked. I did not know then about sharing the "TAP Adapter" created by PIA. I was unable to get Shield to connect with the SSID created by Connectify - not sure why.
Another dongle might not need to be set up through CMD. This would remove some of the inconvenience because none of the setup is saved and all the steps need to be done each session.
Here are instructions for using OpenVPN Connect: (Don't even think about this without a keyboard.)
https://www.privateinternetaccess.com/pages/client-support/android-openvpn-connect
The openvpn instructions work with Shield.
You will not need the typical PIA app. The server profile is for IOS but it works anyway. So you will need to side load two files: 1 for OpenVPNconnect and one for the server profile.
You can download more than one profile and after they are installed, will be available.
Profiles are installed by opening OpenVPN's upper right menu and choosing import from SD (or something similar).
ES File Explorer's browser can find these files online and download them. The browser is painful to use and a keyboard helps. I used the keyboard, touchpad and remote because navigation is truly mysterious.
Sadly I get 1 Mbps down with the eastern server! Will try another.
Downloaded a different profile and get 18 Mbps. Should be enough.
