I'd also like to see crushed coral for PTO-themed maps.
Also, some fun facts about Marston Matting:
Each piece of M8 planking was about 10ft long, and 15in wide, and weighed ~66lbs.
Over two million tons of it was manufactured. That's over sixty million feet of planking.
If you were to line up every length of it ever manufactured end to end, it would stretch roughly 11,478 miles. That's HALF WAY around the globe.
And that's just the M8 planking.