Gro Hush has three soothing noises: ocean waves, rain and a heartbeat

Also known around these parts as the "baby shutter-upper", Gro Hush will be – for some parents, at least – worth its weight in gold. It's a personal white noise device that claims to calm fussy babies, without subjecting everyone else in the vicinity to the soundtrack. It has three soothing noises: ocean waves, rain and a heartbeat. The device fits into a padded holder with an elastic strap that allows you to hold it to your child's ear comfortably.

Getting the batteries in was the most taxing part – they’re under a cover that you need a screwdriver to access. After that, push and hold a button and you’re ready to go.

Volume is preset to safe levels, so there’s no worry you’ll damage your child’s hearing, and it will automatically turn off after 10 minutes.

But does it work? Our tests produced a yawning, calmer infant within seconds, but its effectiveness will depend on whether the sound of falling rain on a tin roof soothes your child to sleep or prompts rage of epic proportions. As anyone with a baby knows, that could go either way. Gro.co.uk