I've seen people reference various steampunk bikes. Thought some who were interested in the movement in general would enjoy this short video. (At the end of the video there is a steampunk-ed My Little Pony):
http://www.pbs.org/arts/gallery/off-book-episode-4-steampunk/off-book-episode-4-steampunk/
http://www.pbs.org/arts/gallery/off-book-episode-4-steampunk/off-book-episode-4-steampunk/