PicoBoard - SparkFun Electronics If you're adept with Scratch, this is a great next step. It has various sensors (light, sound etc) on the board which Scratch can read. It turns mini-programmers into inventors!
Daisy the Dinosaur is another children's programming language for iPads but this is aimed at younger children. My 5 year old daughter LOVES it. Very simple but a good starting point which sets them up for Hopscotch and then Scratch.
Raspberry Pi is a tiny, cheap (25 quid!!) computer for children. It's a BBC Micro for the twenty-first century - something for children to tinker with and program. Could this revolutionise our relationship with computers?
Atul Varma explains how Hackasaurus tools make it easy for children to mess around with the building blocks that make up the web. Web pages are no longer static images that we consume passively. We can get behind them using the X-Ray Goggles, manipulate them and make the web do what WE want.