This Breadboard Spring Vise makes it easy to hold circuit boards of different sizes next to your breadboard. It has no problem accommodating larger, full-size Arduino Uno or Leonardo boards, and it has no problem grabbing an ESP-01 ESP8266 board.
The Raspberry Pi fits in the jaws and stays in place very well, but the micro-USB and HDMI ports prevent the outside of the board from landing properly in the grooves of the jaws. The "version 3" jaws are narrow enough at the top to allow a USB cable to be connected to the Pi.
The product is designed by
patshead