The other thing is tight obstacles, and multi-obstacles, like the trot pole to sidepass mentioned earlier. We had one at the last show - front feet in hula hoop, 360 on forehand, then stand ground tied still with the feet in the hula hoop. Some horses thought they were done and ready to walk out once the turn was done! Then in the next class, it was ground tie only - one of my horses put his feet in the hula hoop, and immediately wanted to start the forehand turn since that's what it was the last time!
One of my favorites to practice is set up the bridge as one "edge" of a back through L, then put another pole at the end of the L, go from bridge, step off bridge, back through L, sidepass the extra pole. I've also sidepassed into the hula hoop, then done a 180 on either forehand or haunches - getting the to sidepass into the hula hoop is tough - they don't like to pick up their feet so well when sidepassing.