Do you ever get drywall dust out of everything you own?

Yes! It can be done. After a total remodel on my last house, I was right there with you. I thought we would NEVER get rid of all the dust. Some things I learned are that you have to have a vacuum with HEPA filters so it doesn't just fly back into the air, and to use moist sponges or clothes when you wipe it up. It takes a little while, but just stay on it. You will finally get rid of it all.