LONDON — Most people have heard of the Marshall Plan. Some might even know what Brady bonds are. But they have not yet heard of the Brunnermeier plan. Or Bishop bonds. Or the Gros accord.

That is because they do not exist yet — except as dreamy proposals by economic thinkers to fix the European debt crisis.

While dealing with Europe’s financial difficulties has been a grim slog for the Continent’s austerity-weary citizens and its frustrated policy makers, it is the opportunity of a lifetime for ambitious idea merchants looking for fame.

If any of them can come up with a plan that is adopted by Europe, they will have secured a coveted place in history — like George C. Marshall, the secretary of state who fashioned the plan to help rebuild Europe after World War II, and Nicholas F. Brady, the Treasury secretary whose introduction of a class of investor-friendly bonds helped end the Latin American financial debacle in the early 1990s.