You can get it out of Pepto: http://www.popsci.com/diy/article/2012-07/gray-matter-extracting-bismuth-pepto-bismol-tablets?image=0 http://www.popsci.com/diy/ar

You can get it out of Pepto: http://www.popsci.com/diy/article/2012-07/gray-matter-extracting-bismuth-pepto-bismol-tablets?image=0 http://www.popsci.com/diy/article/2012-07/gray-matter-extrac...