Alrighty then. I came across a video on how to make a sunrise alarm clock using a timer, LED's, and capacitors for the fade in of the light. I thought it was cool, and may be an easier project than making one with an arduino. But then again, if I want to make my alarm clock wake me up with blue light, and put me to sleep with red light, then I'll want to control the color of my RGB LED's. But no matter, this is still a cool project.
Sunrise alarm clock (using passive components and a timer) video.
There was also a really cool password protected sketchbook video posted on adafruit. The video is here: Cool Password Protected Sketchbook. Is it really a password? No. It's a series of dials, buttons, and it even uses the door knock idea (there are many videos by now on knock door openers, you knock in a specific rhythm to open a door. Of all the one's I've seen, this one is the coolest. There's also a capacitive touch sensor version you can use on door knobs. I think some MIT video demonstrates that.). Anyway, this was cool.
Side Note: The link above for the garage door knock opener uses a mechanical iris as the surrounding structure. The DXF files for that are on page 2 of the following thread on the ShopBot forums. The link is here.