Amazon.com: PI-TOP [4] DIY Edition - Case for Raspberry Pi 4 with Fan, 5 Hour Internal Battery, Mini OLED Screen and Integrated Speaker. Raspberry Pi 4 and Power Supply not Included : Electronics
Amazon.com: Raspberry Pi 3 B+ Case, iUniker Raspberry Pi Fan ABS Case with Cooling Fan, Raspberry Pi Heatsink, Simple Removable Top Cover for Pi 3 B+, Pi 3 Model B, Pi 2
pi-top [4] Protective Case
GeeekPi Acrylic Raspberry Pi Set-top Box Kit,Raspberry Pi 4 Case with 4010 Fan 5V (Blue LED Light) + Raspberry Pi 4 Heatsinks + Extension Board for Raspberry Pi 4 Model B
Raspberry Pi-Top » Raspberry Pi Geek
New pi-top laptop launched: hands on with the new pi-top computer — The MagPi magazine