Binary Desk Clock
This a really cool build. If you know how to read binary, this might be a neat project for you.
via Instructables
Binary Clocks are awesome and exclusively for the person who knows the binary (the language of the digital devices). If you are a tech guy this weird clock is for you. So, make one by yourself and keep your time secret!
You will find lots of binary clocks of different types on the Internet. Even you can buy a binary clock from online store like amazon.com. But this clock is different from all and here I used playing marble to give it an elegant look.