Introducing the Raspberry Pi 3 B+ Single Board Computer - Raspberry Pi Spy
Geekworm Raspberry Pi 3 B+/ 3B Case, Pi 3B+/ 3B Aluminum Alloy Passive Cooling Case Housing for Raspberry Pi 3 Model B+/Raspberry Pi 3 Model B (P252): Amazon.co.uk: Computers & Accessories
Raspberry Pi 3 Model B+ | The Pi Hut
Clear case for Raspberry Pi 4 only on SB Components | Raspberry Pi 4 Protective Case – SB Components Ltd