Yes I know, which why I mentioned the smallest possible configuration, solo cups. Of course, if you really want to get fancy in a very small space, like a Petri dish and test tube, then look into plant tissue culturing. This is currently available and will probably be the replacement for cloning in the future. Would also be a great way to duplicate autoflowers. If I ever get the time and money I want to get a tissue culture kit, there are a couple available for home use.
I really only bring up making seeds and this other stuff to help stimulate the juices of the good folks that read these forums. I am always pleased at how much innovation there is amongst growers. Here at AFN, I have seen everything from great DIY projects to people testing every method of growing. Here is a brief
intro to the subject for those that might be interested or stimulated to give it a try.