micro:bit is a small computer with which you can do lots of nice things. One thing which only looks nice but isn't as soon as you start using it, is its edge connector. It requires either coarse crocodile clips or bulky banana plugs. Elektor designed this nifty dock which adds push buttons, buzzer, servo control, analog input voltage from a potentiometer, IR transceiver, I2C LCD interface, SD card interface plus prototyping area to your BBC micro:bit and provides easy access to its I/O's.
On one side, it even replicates the original edge connector for those who really couldn't miss it.