Have a go at goal. Run straight at the defender rather than stopping or turning back, and either beat them and shoot or pass to the free friend. Both are good. The point is to be brave and try.
Mark a small area about 26x18m with one small goal and no keeper. Two attackers start with the ball against one defender. On the go, the player on the ball runs straight at the defender and tries to score, either by beating him and shooting or by passing to the free team-mate who then shoots. Do not require the pass, since at this age dribbling straight at goal is the right instinct and should be encouraged. Rotate the defender every go so nobody is stuck defending, and keep the queues tiny by running several small groups at once.
The instinct a five year old brings to football is to get the ball and run at the goal, and the worst thing a coach can do is train it out of them too early in the name of passing. At the youngest ages, running straight at a defender and having a go is not a lack of tactics, it is exactly the right thing, and the confidence it builds is worth more than any pattern.
That is why this drill makes the pass optional rather than the point. Two attackers face one defender, so there is always a free friend, but the message is not find him, it is have a go, and passing is offered as one way to do that rather than the correct answer.
The reason matters. A young player who is coached to pass whenever a team-mate is free learns to give the ball away the moment anyone comes near, and by the time real decisions matter he has never learned to beat anyone. The player who is encouraged to run at people, and who loses it half the time doing so, is the one who becomes dangerous later.
So the defender is there to be run at, not feared. Coaching him to jockey rather than dive in keeps the attacker having genuine goes rather than being dispossessed instantly, and every attempt to beat him is a success whether it comes off or not.
The shot is the celebration. When the goal is in sight the young player should take it, and the loud, happy reaction to a shot, in or out, is what makes them want to do it again. There is no such thing as shooting too early at this age.
The one thing to guard is the queue. Two attackers and one defender is three children, and if the rest are lined up watching, the drill has failed on its own terms. Several small groups running at once, with the defender rotating every go, keeps everyone brave and busy.
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.