For stationery lovers out there...
Just adore this multifunction pen by Itoya (owner of the largest bookstore in Tokyo). Just face the side you want (black, red, pencil) towards you and click. God knows the engineering inside, Its like magic :)
Been using it for nearly 3 years now. It's not cheap at over 40usd, but hey, you get what you pay for.
The latest version is a 4 in 1 with blue!
You can also get this direct from Amazon