I second microbit, and there are some robot kits that go with it too. For a more 'electronics' experience, you could build your own arduino on a breadboard. eg

I second microbit, and there are some robot kits that go with it too. For a more 'electronics' experience, you could build your own arduino on a breadboard. eg: http://start.shrimping.it/ http://start.shrimping.it/