All the items used wil be updated later when I have my laptop but:
My Mate Vince has the original concept for this, https://youtu.be/ARx_iZaz3g8?si=h01_FfZV3HzFDaHc
I've updated it with:
Nitro Deck by CRKD
Mayflash Adpater (must have xinput)
20 000 mah battery (5k is ok too, just less hours)
7 inch IPS gaming screen (hdmi on top)
Jailbroken PS TV
That's it!