MicroBit
The BBC micro:bit: the pocket-sized computer transforming digital skills learning. Great to introduces pupils to how software and hardware work together.
It has an LED light display, buttons, sensors and many input/output features that, when programmed, let it interact with you and your world.
Micro:bit have a set of activities and project ideas for pupils to explore. Another potential unit for your BGE course or a set of resources to support a Computing Science club.