Today I set up an exercise that I LOVED. I put two poles on the center line that were 3 strides apart. Then I put a pole on the diagonal next to the furthest pole on each side. So it was like: Go over the first pole and then you have a choice- 3 strides bending line left, 3 strides straight, or three strides bending line right. I never made the poles into jumps because any exercise I can do without actually jumping is awesome (she's still young and I'm worried about joints). This got her to listen to me, we practiced lead changes, and staying supple up to the "jump". Also, It was a nice change from our normal boring dressage figures.
What other exercises can I set up that will help? I was thinking about the Wheel of Death to keep an even stride. Any and all ideas, opinions or comments are welcome :)