I saw B-Squares posted on the Sparkfun blog. One of the neatest things I’ve seen in a long time, they’re magnetic so you can simply attach them to each other and build out your circuit.
Amazing idea and I love that it’s being bootstrapped through Kickstarter. I’ve wanted to get into hardware hacking for a long time; if I had the money right now I’d be all over the Super Recipe Set to get started easily.