Wall size graphics you can print yourself.

[BobA]

Here is an interesting site that allows you to upload a graphic and download a wall size graphic that you can print yourself.

http://www.blockposters.com/

Now what can we create?   

[GlennM]

A life size paper arcade machine?

[patrickl]

I have seen places where you can have your prints done on wall paper.

[BobA]

A life size paper arcade machine?

How about full size or scaled paper patterns for arcade cabinets.  If you have a good side view you could print out any size pattern for cutting.

Edit:  Tried it with a side view from Jakobud's Plans and you have to size the plan so that the measurements are to scale when the jpg is printed.  The site allows you to pick the number of pages so if you have 1/5 scale you pick 5 pages wide and the picture will print as a 100% template.   Sizeing the plan so it prints in 1/5 or 1/4 scale it the hard part.   Plans smaller then 100% are easier as you just have to blow it up the number of steps you need and not adjust for scale.