Answer:
A mechanism to discover who is following you.
Of these everyone has ten, part of two wholes at the arms end. What are they?
A precious gift, yet it has no end, no beginning, and nothing in the middle.
Useful term for when you need to start a fire or notice someone with the same shirt as you.
What's that 7 letter word with thousands of letters in it?
What is big and yellow and comes in the morning, to brighten mom's day?