I just realized the raspberry pi 4 can do something it's predecessors could not(except the pi zero). Act as a usb device for another computer. This got my brain turning. What if
Stick PC: Pi Zero USB Dongle — The MagPi magazine
How To Mount A USB Flash Disk On The Raspberry Pi - Raspberry Pi Spy
Raspberry Pi X350 USB Audio Card with Microphone Input / Audio Input & Output For PC/Raspberry Pi 3 Model B+(plus)/3B/2B|Demo Board| - AliExpress
What Can Video Editors Do with a Raspberry Pi Computer?