Here comes a case that can hold the Raspberry Pi and the screen together. It consists of a metal case with a frosted tactile feel and a 3.5-inch TFT touch screen…
While the manufacturer hasn’t provided info on where the display comes from, the PCB looks functionally identical to a screen made by Waveshare, so I’d say they are similar:
Regarding a fan, there isn’t one in this case, and it’d be hard to integrate one as the power pins on the 40-pin header are taken up by the HAT, but in almost all cases, a heatsink is more than sufficient to keep the processor cool.