I decided to hide it with a poster and so I had to make one!
Step 1: Stuff you'll need.
Ducttape (or atleast stickytape of some sorts)
Doublesided foam mounting-tape (or something to stick it up with)
High-resolution image .. I suggest using an imagesearcher like Altavista (yes everyone uses google but they ARE helping the chinese and american governments to censor the internet so I just can't support them)
A program that makes posters. Here are my favorites :
PosterRazor - a stand-alone program that makes posters from images as a pdf-puzzle. This is the one I will be referring to.
Poster Printer - a program that acts as a printer-driver to print anything directly as posters.
PDFCreator - another printer-program but one that makes PDFs from any program.