Includes cases, a sound card (https://www.audioinjector.net/rpi-hat), and a SPI LCD display. I'm also including a janky cable I made that lets you get composite video + audio from the Pi3's 3.5mm jack (no quality guarantees on it, but I have no use for it anymore).
No SD cards or PSUs.
I haven't used any of it recently but last I checked everything worked.
The cases are actually both RPi 3 cases, but the Pi 4 fits except for one I/O panel (see picture) so I leave it in there.
I used to run Kodi on these to connect to my old projector that only had composite video, but have since switched to a small x86 machine.