There is apparently a significant industry - one containing at least several companies - dedicated to the manufacture of "deal toys", given by financial-industry types to mark the signing of large contracts. Its signature material is lucite, a clear plastic heavier and more expensive than glass, into which plaques and objects of symbolic significance can be embedded. Obviously, this industry is in deep trouble.
Also: the FT's Weekend magazine placed its wonderfully dry piece on the subject - my source for everything in the paragraph above - immediately after its serialisation of the Gillian Tett book on how ill-advised financial-indsutry deals blew up the world economy. I sometimes suspect that FT Weekend is trying to incite a revolution, probably aimed at readers of How to Spend It.