Thrown. Once it lies still for 1 second it releases a cloud of smoke that lasts 20 seconds.

Thrown. Once it lies still for 1 second it goes off. Every player, teacher or student, who has it on screen with nothing in between is whited out for 6 seconds before the view recovers.

Thrown at the crosshair. It snaps onto a teacher, player or classmate near the centre of the screen. A player it hits has ink over the screen for 8 seconds; a classmate only gets ink on the head.

1 mischief. The peel stays in your hand and can be thrown. After it lies still for 0.2 seconds it is armed, and the next teacher or student who is not seated or carried and steps within 0.35 m slips and is stunned for 5 seconds.

Use 1 aims and use 2 fires a dart. The dart reaches up to 25 m and stuns the teacher or the student it hits for 5 seconds. It has one shot.

While the phone lies in your desk drawer during class it rings every 5 to 15 seconds.

Ringing it inside a classroom takes 1.6 seconds. Each computer-controlled classmate who hears it has a 60% chance to react: they get up and walk a few steps, and in rooms with seats they sit down in a different free seat.

Holding use for 1 second launches a drone that flies for 30 seconds. Within 1.5 m the drone can free a student from a dunce pillar, open or close a door or a toilet door, switch a light and change the Schoolyard music.

Grab a student, either a player or a computer-controlled classmate, and carry them in front of you as a shield. The pliers break after 3 grabs.

Drinking it takes 1.6 seconds, gives 1 mischief and makes you invisible for 30 seconds. Being stunned ends it early.

Drinking it takes 1.6 seconds, gives 1 mischief and shrinks you to 0.38 of your size for 30 seconds. Being stunned ends it early.