Weight Vest agility hoop/ladder combo drills
These drills can be done with either an agility Hoops or agility ladders. Performing quick feet drills while wearing a weighted jacket increases leg strength and speed of movement.
You want to make sure that your load is not TOO heavy; you want a moderate amount of weight so that it does not create heavy steps, but simply adds resistance as you train.
See the various drills performed in the video above, and note arm action and foot action in each drill. One last thing to note is "power pad action": stay on the balls of your feet as you perform each drill.