Answer:
What gets sharper the more you use it?
The 8 of us go forth and not back to protect our king from a foe's attack. What am I?
What can be heard in court or used to carry briefs?
I go around a yard but do not move. What am I?
What comes in many different sizes but is always only 1 foot long?
Before Google, we actually had to physically look things up in this building full of knowledge.