If you're out in public, would you pick up a penny off the ground?
If not, how much does it need to be before you'd pick it up? Nickel? Dime? Quarter? More?
Is your picking up (or not picking up) behavior different if you're with someone else?
Would any of you leave a dollar bill on the ground?
This reminds me of a very long time ago, way before cell phones, took a girl out on a first date for dinner. Afterwards, she went to use the bathroom before leaving and I was standing in the hall waiting for her. She came out and caught me checking the pay phone coin return. We never did have a second date.
Oh, and I definitely still do pick up even a single penny. Found one today which got me to asking you all here.