Aside from toilets that were used but never flushed (sorry, gross but true) and hand towels that are always on the floor even after you've hung them back up a dozen times by 9 AM (maybe you have a poltergeist?) here are some of the things you can expect to find in the bathroom once you have kids.
1. A Full Load of Laundry.
Our bathroom floor is consistently the #1 dumping ground for jackets, hoodies, and of course the ubiquitous balled-up sock (it's everywhere else in the house, frankly it would be a little weird if it wasn't also in the bathroom.) My children apparently go into the bathroom to shed their clothes like a snake sheds its skin, and have you ever once seen a snake pick up its old skin and put it away? No, you have not.
2. Every Toy Known to Man.
I've found all manner of toys in the bathroom, from stuffed animals to tennis rackets. To be fair, this is a toddler's version of taking your smartphone in there with you so I kind of get it. But judging by the toys I've picked up, our bathroom is the best place in the house to assemble Legos, organize your extensive Shopkins collection, and have a Nerf gun fight. One time I found a bike helmet in there, which proved beyond a reasonable doubt that I have no idea what is actually going on around here.
3. All the Spatulas.
Once you have kids old enough to crawl or walk, you'll find an astounding number of kitchen implements in the bathroom. At first this will completely gross you out, but after a while you won't even think anything of finding the entire contents of your kitchen drawers scattered all over the floor around your toilet. Motherhood does stuff to you.
The thing no one tells you about parenthood is that no amount of begging, bribing, cajoling, threatening, or giving a 22-slide PowerPoint presentation will motivate kids in the slightest to put the new toilet paper roll on the dispenser. It just won't. Only when they grow up and have children of their own will they be seized with a desire to actually change the roll. I think that's called karma.
5. Water Everywhere.
There will be water on the counters, water on the floor, and maybe on a bad day, water dripping from the ceiling from the upstairs bathroom above you. And not just when your kid bellyflops into the tub like a majestic humpback whale breaching the ocean. It's a fact that kids can also flood the bathroom when getting a drink, washing their hands, or even spritzing the cowlick in their hair to make it lie flat. It doesn't seem possible, yet here you are, standing in a puddle.
The commode is a pretty happening room of the house where parents can find pretty much anything, but please note I didn't include "hairbrush" on this list. That's because it will literally never, ever be in the bathroom. But don't worry, you can always try your luck with the spaghetti serving spoon sitting on the edge of the bathtub.