Here are some details about a little expansion board from John Jay featuring 8 LEDs and 8 switches. Designed to sit on top of the Pi, directly into the GPIO pins.
They’ve made it over to the UK via eBay:
More details from Gordon over at Drogon
You can buy them via John Jay’s store on eBay.
Thank for the link! This kit is pretty simple to put together with basic soldering skills in about half an hour. It is also very affordable at around $10 US + shipping which is a huge plus.