Move aside Gwynnie's jade eggs, there's another product on the market vying for space in your vagina.
Introducing the Babypod, an intravaginal device that apparently "stimulates neural development in unborn babies" through music.
Yep, you read that correctly. The speaker is inserted into your vagina with the aim of playing music to your unborn child - kind of like vaginal airpods I guess?
Mum and dad can also bop along with their spawn, listening to the same tunes via external headphones. And when bub's had enough of 'Baby Shark' or Beethoven, you simply pull it out like a tampon.
The team behind this strange device won The 2017 Ig Nobel Prize for Obstetrics. But before you get too excited, this prize honours achievements that "make people laugh and then think."
The company also claims that it's safe, noting that Babypod has been given the tick of approval by the US FDA as a "general welfare product".
"The emission of vibrating sound waves in the vagina has no adverse effects on the foetus," they note, adding that this "is why sex toys are allowed during pregnancy".
There's some trivia for you.
And, according to the founders, the "first 100 children using Babypod have already been born and their otoacoustic emission studies at birth have been normal".
So that's a relief.
There's even a customised playlist which outlines the songs that make the fetus dance the most.
Top of the list is Mozart: Serenade K525, but Queen, The Village People and Shakira all feature on this special jukebox for your box.
It's also reusable - as long as you use protection.
"Babypod is reusable through the use of a condom, in the same way as a vaginal ultrasound probe," the founders advise, explaining that using a condom does not "change the intensity of the music".
The company does concede, however, that Babypod is not safe for everyone.
"We recommend beginning use at week 16 of the pregnancy, and continuing until the baby is born, provided the mother does not present with any contraindications for use: cervical dilation, high-risk pregnancies due to uterine malformation, possibility of premature birth, premature rupture of membranes, placenta praevia or active vaginal or urinary tract infections," they note.
Now, while the very poignant tagline reads: "Mothers and babies united by music before birth," it's important to remember that there are other ways, albeit more retro, to play music to your gestating baby that don't involve shoving a speaker up your bits.
Hillary Rorison of the Australian College of Midwives calls the Babypod at best "harmless" and at worst "potentially damaging".
"The fetus begins hearing from about 18 weeks in utero," Mrs Rorison says. "He hears the sounds of his mother's heart and bowels, as well as sounds external to her body such as the voices of his parents, music and any other external noises (traffic, television and so on). The developing fetus' ears are perfectly adapted to hearing through his mother's abdomen.
"Vaginal earpods are at best a harmless unnecessary gag product, and at worst potentially damaging to the sensitive fetus' hearing depending on the volume. It's probably more convenient (and comfortable!) to listen to music from on normal speakers."
Psychologist Cath Corcoran agrees."I am unsure it's necessary to be inserting speakers into vaginas to expose your baby to music given the various ways our babies can listen to sound through voices, singing, story telling, speaking to your baby and playing music," she says.
Maybe leave them off the baby shower registry just to be safe.