There are few things more frustrating than not being able to get to sleep – and stay asleep. But there could be a very majestic, and simple, way to help you nod off.

Queen Elizabeth II’s method of choice is very reasonably priced, not to mention very comforting, even by its very mention. She uses a hot water bottle for a good night’s sleep, placed between the sheets to make her bed nice and cosy, according to 9Honey.

She may not need to carry a passport, but this sleep hack is a must-have in her luggage while travelling, wrote historian Robert K. Massie in a Vanity Fair profile on Queen Elizabeth, as are other comforts like her feather pillow, favourite china tea set, and even her own white kid toilet seat.

And at just $6 at Kmart, it’s an affordable way to see if a hot water bottle could help you if you have trouble sleeping.

But take care when using one, says the Product Safety site, to avoid burns. Don't pour boiling water directly from a kettle as it can damage and weaken the rubber the bottle is made of. Also, be sure to cover the bottle with a towel or fitted covering, use it to heat the bed and remove it when you get in, and buy a new water bottle each year. 

The royal water bottle is such a necessity for a comfy sleep for the Queen that she’s even been known to fill it herself when a housemaid neglected to do so, according to the Daily Mail. 

So if this sleep hack helps you have a restful night, you can thank Her Majesty for that.

What remedies help you sleep? Let us know in the comment section below.