Choose a spot in the classroom (a corner, the teacher's desk...) and place there several different objects (pens, rubbers, books etc) at random and a small box or a bag that represents the basket. Decide with your students how many points you will score if they send the ball (you can make a very simple ball with a piece of paper) into the basket (you could give 3 or 5 points, depending on how difficult it is).
What is fun is that each student, even if he doesn't succeed in throwing the ball into the basket, will score one point for every correct description of the final location of the ball that he/she can say: "The ball is behind the red pen", "It is under the teacher's desk", etc. In such a way, it often happens that a student scores more points when the ball doesn't go into the basket, depending on the student's ability to use the correct prepositions.
You can choose if you prefer to divide the class into teams or make an individual competition. Students have a lot of fun in practising this activity that is suitable for children and teenagers as well.