Amazon.co.jp: GeeekPi Raspberry Pi 4 Set Top Box Kit with Port Expansion Board, Raspberry Pi 4 Acrylic Case with 4010 Blue LED Light Fan 5V Compatible with Raspberry Pi 4 B : Computers
Amazon.com: Raspberry Pi 4 Case, iUniker Raspberry Pi 4 Fan ABS Case with Cooling Fan, Raspberry Pi 4 Heatsink, Simple Removable Top Cover for Pi 4 Model B/ 4B : Electronics
Raspberry Pi-Top
Pi-Top: The 3D-printable Raspberry Pi laptop anyone can build - CNET