Cutting down new trees for things we will use once and throw away seems pretty silly. Here are some ideas to reduce your paper use in the bathroom.
Get some handkerchiefs. And put them where you'll use them.
No more tissues. No more tissue box, with the plastic inside. I found a small basket from Goodwill and stuck some in there.
Buy recycled toilet paper.
Seventh generation has some that is not sold in plastic packaging. I get mine at a local store, but you can also find it on Amazon. (Also, look for something with a high percentage of post-consumer recycled paper content).
Use reusable cotton rounds instead of cotton balls.
Use a real hand towel.
This should go without saying, but I have seen those horrible disposable-paper-towels-in-a-box that are marketed to families keep making appearances, so I'm going to say it--there is nothing wrong with cloth hand towels. You will not get germs from using a hand towel in your own house. Throw them in your wash when they get dirty (or if someone is sick)!!
Clean with reusable cloths.
Instead of disinfecting wipes or paper towels to wipe down the counter, use reusable cloths and a spray bottle of homemade cleaner.