The idea would be to take Ben's experiment/prototype as inspiration/guidance with the original Makezine blog post and create a large piece of wall art/signage for the space.
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Unless someone has scrap we can get a piece of 4'x8' 11/32" Plywood for ~$16 and cut it to dimenstion.
I found a great explanation of what Acrylic Medium is. Also found it in 32oz for ~$22 shipped...