For Raspberry Pi expansion DIY kit (connection cable + high-quality 400-hole breadboard + GPIO adapter board) - AliExpress

Adeept Raspberry Pi GPIO Breakout, T-Type GPIO Expansion Board +830 Points Solderless Breadboard+65pcs Jumper Cables +40pin Rainbow Ribbon Cable, Raspberry Pi GPIO Expansion Kit : Electronics

GPIO Adapter for Raspberry Pi 400

Inland RPi GPIO Breakout Expansion Kit for Raspberry Pi - T-Type Expansion Board + 400 Points Tie Points Solderless - Micro Center

WayinTop RPi GPIO Breakout Expansion Kit for Raspberry Pi 4B 3B+ 3B 2B B+, T-Type GPIO Expansion Adapter Board + 830 Tie Points Solderless Breadboard + 40pin GPIO Flat Ribbon Cable +

Raspberry Pi 40 Pin Gpio Extension Board Raspberry Pi 4 Model B Gpio Pin Layout - Demo Board Accessories - Aliexpress

Raspberry Pi 400-Only AliExpress can offer this price

New Raspberry Pi 400 Is A Computer In A Keyboard For $70

Adafruit Cyberdeck HAT - GPIO adapter for Raspberry Pi 400 - Adafruit 4863 Botland - Robotic Shop

Designed for Raspberry Pi A+/B+/3 B/4/4B This shield is in a fancy T-shape, coming with 40 pins, can plug into any solderless breadboard High quality

KEYESTUDIO GPIO Breakout Kit for Raspberry Pi - Assembled Pi Breakout + Rainbow Ribbon Cable + 400 Tie Points Solderless Breadboard