Schools in Australia have started banning the newest kids' craze, 'Fidget Spinners'.

It’s rare these days that the biggest toy trend doesn’t have a microchip – or a motor, or even a cute face. Low-tech and simple isn’t cool anymore.

But if you’ve been to a primary school lately you’ve probably seen that the newest craze in children’s toys is just that.

Fidget spinners, as they’re called, are simply pieces of plastic that spin with a flick of your finger.

And the toys are so distracting they’ve been banned in thousands of schools across the US. Now, even some Melbourne classrooms have begun implementing bans, The Herald Sun reports.

Listen: Before it was Fidget Spinners, it was Shopkins.

The toy’s action sounds so simple, we would guess they’d be boring. So why are they so popular in Australia, the US and the UK?

Well, it’s in the name really – fidget spinners are perfect for using up nervous energy.

Fidgeters everywhere are loving the simple way to make use of their hands that doesn’t involve incessantly clicking a pen or tearing up pieces of paper. The appeal is in trying to get the toys to spin for as long as possible.

]

It’s not just kids who are loving them either. Adults are also in on the craze, claiming the spinners are stress-relieving.

But for Mazenod College in Mulgrave, Victoria, the toy’s are a problem. Assistant principal Tony Coghlan told the Herald Sun the school had imposed a ban on students bringing spinners to class.

The addictive toys come in plastic or metal and range in price from $10 (plastic) to more than $80 (for the fanciest palm-sized creations you have ever seen).

All Spinners on deck! If you have a #fidgetly give us a ????????

A post shared by The Original Spinner Brand ⚙️ (@fidgetly) on Feb 27, 2017 at 12:01pm PST

In the US, New-York based producers have sold more than 20 million fidget spinners to department and toy stores in April alone, according to the New York Post.

“At this rate, it would be our largest-selling toy in our 50-plus-year history,” the vice president of the company, Allen Ashkenazie, told the Post.

But as most trends disappear as fast as they appeared, Ashkenazie knows the fad won’t last forever.

“I can literally walk into the office on a Monday morning in a few weeks from now and it can be yesterday’s news. As if it never existed.”

Does your child have a fidget spinner? Do you want one for yourself?