This is for the ladies.
If you don't have one, get one. It's my wife's best friend.
...and sometimes mine. There are times when I want sex and she's like 'meh' but she will take care of herself right in front of me with this thing and let me get a quickie immediately after. I love watching how intensely she cums with this thing. Gets her soaking wet!
https://hitachiwand.com/

only ladies here are the guys who want to be

My friend has one and she loves it.

there is an attachment for 'shafts', i wonder why there isn't porn with couples using it together

I had one of the attachments. It just didn't get rough enough for me to get off. This one works pretty well:

https://www.amazon.com/Massage-Therapy-Massager-Adjustable-Comfortable/dp/B08JGSCSW8/ref=sr_1_15?crid=3ED2O597A5IRI&keywords=j2+vibrator&qid=1688346153&sprefix=j2+vibrator%2Caps%2C230&sr=8-15