One of the most profound additions to my aikido practice, in my humble opinion, has been the development in our system of what we commonly refer to as "chained series" or renraku waza . The concept isn't new, of course, but I don't know that many people practice it in aikido (help me out if I'm mistaken, I'd love to take a look at what others are doing). Basically, you would start off with uke either attacking or grabbing a wrist. Tori performs technique A, uke falls down (or submits). Then you do it again, but this time uke attempts to escape or counter technique A, so tori moves on to B, so on and so forth. Many of these chained series can get rather long, upwards of 9 or 10 even. When it comes right down to it, there are probably an infinite number of ways you can combine them, but the main idea is to practice flowing from one thing to another, to follow uke, to keep from getting attached to making a single technique work, by golly, blah, blah, blah...