Simon Maxwell of the ODI offers four visions of bilateral aid. The spyglass is dominated by multilateral programs; the spigot is 'one cheque a year'; the spoon concentrates on health and education programs; the spanner picks up infrastructure. (Expect to see this paper on the ODI Blog, but you heard it here first.)
This brief paper got me thinking about other analogies for aid. Spanish omelette? Spandex? Spiral? or Spaghetti?