Seeed Studio Grove Base Kit with 10 Grove Module Connectors for Raspberry Pi, Accessory Category: Interface / Bridge, Form Factor: HAT, MPN: 110020169.
Pi-Top PROTO Add On Board for Raspberry Pi Laptops, Product Name: Pi-Top PROTO Add On Board for Pi-Top Raspberry Pi Laptops, Accessory Category: Interface, Form Factor: Addon, MPN: PT-PROTO.
Raspberry Pi Official Case Fan for 4, Product Name: Official Case Fan for Raspberry Pi 4, Accessory Category: Cooling, Form Factor: Addon, MPN: SC0448.