Answer:
A hole in a pole, though I fill a hole in white. I'm used more by the day, and less by the night.
I know a word of letters three. Add two, and fewer there will be!
Useful tool for who in darkness dwell. Within you, corrupting like a deadly spell.
A device for finding furniture in the dark.
I cannot be other than what I am, until the man who made me dies. Power and glory will fall to me finally. Only when he last closes his eyes.
What never gets any wetter no matter how hard it rains?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?