Shielding material

[R.G. Keen]

>I'm looking for some simple, flat yet thin and pliable conductive 
>material to use for shielding and ground planes to decrease noise 
>and other interference. Sorta that cardboard-with-tin-foil-on-the-
>other-side deal...
>Actually preferably conductive on one side, non- on the other. Any 
>ideas? Should be cheap and available from digikey/mouser/other 
>large supplier in the US. 

The devil makes me ask - why don't you just spray some 3M "77" 
spray adhesive onto your favorite cardboard and use a brayer to roll
down some aluminum foil? It doesn't get much cheaper and more available
than that.