Good Riddles

Question: When you bend me I'm kind
But I'm very hard to find
I'm easily sold
and rhyme with this when told

What am I?

Question: You have two coconuts and you want to find out how high they can be dropped from a 100 story building before they break. But you only have $1.40 and the elevator costs a dime each time you ride it up (it's free for rides down).

How can you drop the coconuts to guarantee you will find the lowest floor they will break at, while starting and ending at floor 1?

Note: They break when dropped from the same height and they don't weaken from getting dropped.

Question: what is yours but you can't actually hold ?

Question: One day, Jack went to Walmart. He saw Santa and wanting to talk to him. He then told Santa what he wanted for Christmas. At the end, Santa told Jack, Merry Christmas. Jack said, I can't. Santa was confused. What does Jack mean, I can't?

Question: I support the fallen (ones) I restrain the naughty (ones) I replace the nonexistent (ones) What am I?