Answer:
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it can neither see nor feel it. What is it?
When the day after tomorrow is yesterday, today will be as far from Wednesday as today was from Wednesday when the day before yesterday was tomorrow. What is the day after this day?
What kind of pet always stays on the floor?
A hole in a pole, though I fill a hole in white. I'm used more by the day, and less by the night.
What gets closer when you blink?
I always have to work with something in my eye. What am I?