iOS 4.3:
On March 9th iOS 4.3 was released, and it was jailbroken the very next day. This hack allows you to jailbreak your iDevice unteathered. In other words, you don't need to jailbreak it everytime to restart the device. .
LikeLight:
Are you completely obsessed with Facebook? Does your smartphone not keep you up-to-date enough? No worries. Now you can build your own Arduino-based Lego "LikeLight" that lights up whenever someone clicks the infallible "like" button on your Facebook page. .
LED Stair Lighting Controller: