Train passing under a changing touch restriction in a confined lane. One touch forces early decisions, two touch forces a first touch that actually improves the position, and alternating between them stops either becoming automatic.
Mark a corridor about five metres wide and twenty long, with four mannequins inside it and one on each flank. Six players work up and down the lane. Call one touch or two touch and change the call every thirty seconds or so. On two touch the first touch must move the ball into a new passing line, not simply stop it. Nobody leaves the corridor to find an easier angle. Work both directions.
Touch restrictions are the most common constraint in football coaching and the most casually applied. A coach calls two touch, the players spread out until two touch is comfortable, and nothing has actually been made harder.
The corridor is what gives the restriction teeth. At five metres wide there is no room to open the pitch, so a two touch player has to control and release along more or less the line the ball arrived on. That forces the first touch to do real work: it has to move the ball into a passing line rather than simply stopping it, which is the distinction most players never have to confront in an open grid.
Alternating between one and two is more valuable than either on its own. One touch alone becomes a reflex within a few minutes, and players settle into a rhythm where they are barely deciding anything. Two touch alone lets everyone get comfortable. Switching the call every half minute means the group never adapts to a single constraint, and the moment after a change is where most of the mistakes and most of the learning happen.
The mannequins inside the lane matter because they stop players hugging the edges. Without them, the ball would travel up and down the outside of the corridor and the width would be irrelevant. With four of them in the middle, passes have to be threaded past something, which is what makes the firm, flat pass necessary rather than merely preferable.
Save it to your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block. Or start from a blank pitch and build your own.