I've seen some older campy hubs where someone flattened one side of the flange and put an angled cut through the flanges on the other side to turn them into a business card holder that looked pretty cool. Not sure if there's an analogous thing you can do with a crankset. Maybe somehow turn them into bookends after removing the rings and polishing?
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"