Answer:
The one fashion accessory farmers and hipsters can agree upon.
I have one, you have one. If you remove the first letter, a bit remains. If you remove the second, bit still remains. If you remove the third, it still remains.
A deep well full of knives
What did the depressed math book say to the calculator, notebook, and dictionary?
What do the piggy bank, the government and children have in common?
Why was the cook arrested?