you could varnish them and drill a hole in them with a teeny drill (a dremel, perhaps), then attach wires and hooks, and wear them as earrings.
or.... what about crunching them up in a ziplock bag by hitting them with a rolling pin, and then using them as sprinkles on icecream, or on other stuff that sprinkles go well on. i bet using that method you could add them to banana bread, or cookies, or loads of other things, for a little added banana style crunchy goodness.