I still think you should throw it at people. What colour is it? If you've said, ignore me. Its a lot easier to do things with fairly natural gravel than.... multicolour fish r fun gravel or something.
some of its fairly natural (light brown) while other is a white-black-natural mix. i'm really thinking that i'll just have to use it to grit the parking lot -- although that bonsai thing sounds really tempting... i could develop another hobby this summer...