Stop the ball in the box. The next player goes straight to it, turns it 90 degrees, and passes.
Watch for
Don't let player 2 run around the ball. Have them go straight to it and do a skill: a rollie toward player 3, an L turn, and so on.
Focus
Player 2 does the skill and passes while still in the box. This works on dribbling skills and how to dribble to set up a pass.
A hard drill for U5/U6, but U7/U8 should be able to do it.