After your house is finally paid off, you'll need to get a statement called "Satisfaction of Mortgage" from your lender. You should cancel any recurring payments and make sure your homeowner insurance provider knows that the lien has been removed. Check your credit report too.
Then, it might be time to consider doing any upgrades you've been putting off. A home improvement loan can help you increase the value of your home even more – something that's a good idea if you plan on selling the home in the near future.