Static electricity
A charged object can make a neutral object have charge separation. Charges of the same sign (negative to negative or positive with positive) repel each other, and charges of the opposite sign attract each other. This force  the part of the neutral object that is near the charged object have opposite charge of the charged object. This force rapidly weakens if the two objects move away from each other. The effect occurs most when the neutral object has a charge which can move freely.