iPhone case made of papier mache

Papier mache, crazy, huh?
I made some masks lately using papier mache, so when I was wondering around Instructables looking for a way to put my iPhone 3G in my car with style, I just thought I'd give it a try.
What I will do is basically a mold of the plastic tray the iPhone came in and then ellaborate a bit more to make it more like a case that can be placed in your car.
Of course, you can use this Instructable for any kind of iPod, MP3 player or cellphone, as long as you have somewhere to take a mold of the gadget.

What you will need:
iPhone (3G or original) plastic tray: from the packing the iPhone came in.
Paper: preferably from spam, catalogs or magazines, thick paper is best for a solid case.
White glue or any other glue: non-toxic, washable and is good for paper and using with your hands. I am using glue instead of the traditional papier mache paste because it is easier.
Vaseline: to apply the tray to make the mold.

Step 1 Apply Vaseline to the plastic tray

Apply a generous amount of Vaseline to the tray and distribute it evenly.
But do not apply too much, just make sure the Vaseline is everywhere.