The MonkMakes Connector for micro:bit makes it super-easy to connect I2C, SPI and other devices to your micro:bit without losing the main connector rings.
Unlike other connectors that are designed to break-out all the micro:bit pins, this connector just breaks out the useful ones that are not in use by the micro:bit for other purposes. Handy!
Most importantly, you don't lose access to the micro:bit's normal connector rings for adding all sorts of other components with your projects!
Note: micro:bit not included