(Inspired by "The Seven Stages of Misery" from The Practice Revolution by Philip Johnston. Book avail. to borrow from LATI.)
Drill for pushing students to do a particular pattern many times, and succeed under pressure.
Have each student fold a piece of paper three times so that the creases form 8 rectangles. Place a coin or piece of candy or other trinket on the top left square. Each student runs the pattern at their own pace, ignoring others. If the run is perfect, they can move the coin to the next rectangle. If the run is less than perfect, the coin goes back a rectangle. The goal is to get the coin to the final rectangle.
Make sure students understand what constitutes a perfect run. Have each student do the first attempt with you watching and you decide if the run was successful.
Warning:
Only do this once students think they've mastered a pattern. If the sticking, movements, or rhythm are not completely confident, the drill is extremely frustrating. No need to add pressure when a student is learning.