Why fumble around in the dark when you can use solar power to light the way? This Key Hole Light from Comfort House charges up during the day, and illuminates your door in the dark of night. A quick button push keeps it lit for 10 seconds, plenty of time for even the clumsiest oaf to unlock a door.
Attach it to your door with its adhesive pad or included screws, and it's good to light your way 720 times per charge. Even if your house is like Grand Central Station, that'll be enough power. It even includes interchangeable brass, white, and chrome covers to match your hardware. Not a bad deal for $12.95.