Pay off my parent's debt, retire them, pay off my own, spend my days reading comic books and messing around in Blender. Stay at my cheapish area, have my parents sell their house and move to a bigger one. Travel more since I'm near an airport. Avoid anything too expensive and live mostly the same lifestyle so it doesn't run out. Invest in the safest thing possible since at 5 mil youd be making 6 figures a year letting it sit.