I have got increasingly interested in instruments that predate human life and will survive the fall of civilization - the very first objects people made music with. I got a great response to a pair of pacay shakers last night (dried giant bean pods - in their fresh state, the beans are in a pasty matrix like ice cream - how many musical instruments can you eat?). And you can get the same variety of sounds out of a pair of scallop shells that you can with a drumkit. You can blow hagstones like xuns (Bob Pegg makes an act of that) - they are bored by piddocks, which have been around for 14 million years. Conch trumpets, donkey jawbone rattles. Marimbas of floating ice slabs, as people do around Lake Baikal. Or slapping still water as percussion, as the Baka pygmies do.