Raspberry Pi Zero/3B+/4B GPIO Terminal Expansion Board – Genova Industrial
Multifunctional GPIO Raspberry Pi Expansion Board for Raspberry Pi 2 3 – MakerFocus
Raspberry Pi Pico GPIO Expansion Board - RobotShop
Amazon.com: XICOOLEE Dual GPIO Expander for Raspberry Pi Pico, Two Sets of External Expansion 2x20PIN,Four HY-2.0-4P Headers,Full-Color RGB, Onboard Micro SD Card Slot, for Connecting More Expansion Modules : Electronics