SparkFun/Adafruit Slide with 1×2 Click
Accepts 50+ different SparkFun 1×1 sensors and other boards, particularly the Qwiic line of sensors. Also accepts many of the STEMMA QT-form Adafruit sensors.
You get a SparkFun/Adafruit Slide, a 1×2 Click, and assembly hardware.
Assembly hardware includes: 4 M2.5 x 6 machine screws.
Material: ABS plastic; 3D print
Carefully drive the screws directly into the raised bosses. You should be able to attach and remove boards multiple times without causing any damage to the Slide.
Electronics are NOT included. Photos showing electronics are for reference only.