Monday's Riddle: Far from Ordinary...

This is a tricky one! Can you guess the theme this week? Good luck : ) ~ F
Perhaps ordinary, as some may see. Sometimes a boot or a willow tree; a shoe that flies, a mirror that lies, a cape on your back or a red velvet sack. I am that thing to seek from any good story, bestowing on you either hardship or glory. An object of want, a token of trouble- these things I am, but never a double. 

What am I? 
I gave you a clue!FEAR NOT THE UNEXPECTED