1.

The maker doesn't want it; the buyer doesn't use it; and the user doesn't see it. 

money
a coffin
a bed

2.

What goes up when the rain comes down?

umbrellas
the temperature 
the sun

3.

Why do fish live in water?

fish can't breathe
mermaids also live in water 
cats can't swim

4.

What always goes to bed with his shoes on?

a horse
a child 
a river 

5.

If you look in my face, I am somebody. If you look in my back, I am nobody.

a wall
a mirror 
a book