How about... a transparent nxt monolith.
Proportions 1:4:9 as in 2001: A Space Odyssey
Proportions 1:4:9 as in 2001: A Space Odyssey
Where can I buy one of these to put on my desk?
Or maybe it could be my desk.
let's 3D print, engrave with QR-code or something to represent a colored coin.
or just 3D print and deploy as marketing article.