Keep possession to find and use a free target player, then switch. Circulate to move the defenders, play into the open target on one side, and switch quickly to the target on the other.
Three players keep the ball from two defenders in a 24x18 yard grid, with a target player at each end. Score a point by playing into a target, who lays it back, then switch and find the other target. Keep the ball to move the defenders and open a target, and switch fast when one end is shut. Rotate the targets and defenders.
Adding a direction changes a possession exercise completely, and it is worth understanding exactly how. In a rondo every pass is equally valid, so a player can always solve pressure by going backwards or sideways with no penalty. Give the game two ends and suddenly there is a wrong way to pass, and roughly half of the comfortable options stop being comfortable.
That is closer to football, where possession is only worth anything if it eventually goes somewhere. The two targets provide the somewhere without turning the exercise into a full game, which keeps the repetition high and the pitch small.
The skill being trained is not really finding a target, it is recognising which one is available. Defenders cannot cover both ends, so one is always more open than the other, and the point is scored by the team that identifies which. A group that keeps trying to force the ball into the crowded end will pass beautifully and score nothing.
Switching after using a target is where the real work happens. Playing in, receiving the lay-off, and then immediately moving the ball to the opposite end means the defenders have to travel the full width having just committed. Two of those in quick succession is usually enough to open something up properly.
The common fault is target players standing still. A target who holds one position is marked within seconds; one who moves along his line to stay opposite the ball is available almost permanently, and that movement is the difference between the exercise flowing and stalling.
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.