When you search the internet there are lots of gimmicks available for coaches and pupils to help them improve their strokes, for example there is a ball that is on a rod that spins when you hit it correctly to give you the feel for topspin(the ball spins foreward when brushing it on a low high swing path)

But all these gimmicks cost a few euros and so I thought you would all like this idea that,although coasts something is probably something that you already have in the house.

This was sent to me by a mate who lives in the USA(you see they do have good ideas)

To introduce the concept of swinging from low to high, I’ve had success using an ordinary household broom.

Stand on the baseline with your racquet back, holding that position. Have someone face you while gripping a broom firmly by the handle and positioning the bristles at your point of contact. Now swing at the broom and brush up on the bristles with your strings. If the motion is too level or high-to-low, your strings will get stuck in the broom. But when you brush past the bristles without getting stuck, you’ve got the proper brushing motion needed to apply topspin to the ball. You’ll also improve your extension and follow through.

Brushing up the bristles of a broom gives you the feeling of hitting with topspin. You also get the sensation of proper extension and a full follow-through.