Bidet for sure. A good one in the $300-400 range. It is such a gamechanger to always have a clean ass. And without TP, the toilet never clogs and you aren’t spending extra on TP. Also helps with hemorrhoids if/when you get those, as TP is really rough on your asshole/not good for you.
I still have some TP for guests, but with the dryer built in, it really isn’t needed.
Also, a bidet is a lifesaver if you like extreme hotsauces. Basically, it’s the only piece of daily furniture that makes me go “God, I’m so glad I bought this” for literal years since I got it in the pandemic. No cold toilet seat during winter. Heated seat that doesn’t slam. Hot water. Hot air blow dryer. Self-cleaning.