Sure, they don't work, but these cardboard consoles definitely start more conversations. Best part, you don't even need tape or glue. Thicker paper is recommended, as is a nice printer that can handle 150dpi printouts.

You don't technically even need color, like these old-school pals. (There is a little bit of red, in the logos; and some color elsewhere.)

Unfortunately, no papercraft game pads are included with these two designs, put up by Cubeecraft.

NES: http://www.cubeecraft.com/cubee/nes
Dreamcast: http://www.cubeecraft.com/cubee/dreamcast