The answers to the clues below will have something in common.

1. Certain shoes
2. Trivial
3. Expensive
4. "What's up?"
5. Long-gone amusement park feature
6. Song and movie of 1936

Answers:

1. Penny loafers
2. Penny-ante
3. Pretty penny
4. "Penny for your thoughts"
5. Penny arcade
6. "Pennies From Heaven"