Steampunk is a sub-genre part of science fiction that involves steam powered machines. There have been some amazing Steampunk tattoo work done. Both men and women have gotten them. You would need a solid tattoo artist to this type of work because of the detail needed.
Many people love the Christmas season so much that they get tattoos inspired by the holiday. I have seen everything from Santa, snow, The Grinch and more. Men and woman have gotten these awesome tattoos. Just try and be original. Get a good artist to do it.