A bidet.
I’m too intimidated to try one despite staying in hotels round the world that usually have them. What if it goes wrong? How bad much shitty water do I and the bathroom end up covered in? How do you know if it’s clean? Doesn’t other peoples shitty water end up on the same appliance that you’re now using? Does that mean I end up with other peoples shitty water being jet streamed towards my anus? So many questions, so much doubt. Similarly for those handheld nosel things popular in the middle East and parts of Asia.
The only way for it to go wrong is if you turn it on while standing over it looking directly into the nozzle. You couldn’t get the room or yourself wet without really trying.
The water is clean because it comes from the water that fills the toilet, not the water that drains from it. Nothing from other people ends up on the appliance or you. Clean water sprays from the device, onto the user, then draining into the toilet bowl. Bidets are much cleaner than toilet seats.