How to make a coloring wall???

[greyart]

The company I work for is celebrating their 90th year! The HR director asked if we could figure out a way to make a big coloring wall, we would make an outline drawing and people, while they wait to go on the plant tour, could color in sections and sign it. With markers, crayons, what ever. We could use a plywood sheet as a support but how would we do a surface for coloring? Try to mount paper? is there a matt paint that is colorable? any suggestions? we have a 42" wide printer so we could print the coloring paper but how to mount it???

[La_]

temporary use or permanent?
disposable or to keep?

options abound - roll of heavy brown paper, white paper, rolls of canvas, primed or unprimed, bolts of packing paper, white board, chalk board, glued, stapled, pinned, stretched, frame mount ... the printer paper is probably the simplest, smoothed and tacked to the wall.

la