Drill games are extensions of skill exercises that add some competition to the mix. They can be done with two, three, or ideally four people. I often do them in this order because they build on each other. These are done after an adequate warm-up period.
I also like to do these drill games with 8 people on two courts, then after one court gets to 5, the rotation goes around both courts, with one player going from each court to the other. This gives more variety to play styles and skill levels.
Short (1:52) video showing one Dingles point and two "Take the Net" points. It's on YouTube.
What are your favorite drill games? Do you have different versions of these games?