Answer:
Small, containing light, You'll need it in the dark, It will provide that spark, and shine into the night. Will light up any pyre, 'Cause it can help make a fire.
What is it that given one, you'll have either two or none?
What time of day, when written in a capital letters, is the same forwards, backwards and upside down?
What has fingers and a thumb but no hand?
Watches students at the prom to make sure there's no funny business.
I am a room that has a roof but no walls. What am I?