1/4" x 24" x 48" Yellow Fluorescent Acrylic Sheet
Sheet Yes $97.70
Could be cut into 3.75 * 5.25 to yield about 36 plaques
From there I guess laser burn at trophy shop?
Or could take a pair of 1/8" sheets and make some cuts and glue them together.
Or make a spot for a custom metal medallion...
(I guess these could match a home set if you left a recess for a chip? Stick a non-denom Pharoah in your $25 and $100k plaques.
See
http://tinyurl.com/cmdm7 for ebay auctions for 32 south american plaques.