Start with a penny but sometimes you get a nickel.

Today I found a nickel on the sidewalk and added it to step five of my penny doubling. I now have $0.15. During this project this is the first coin I've found that's worth more than a penny.

In the past I have found money worth more: dimes, quarters, dollars. Once I found a $20 dollar bill just laying there on the sidewalk. If I found a $20 dollar bill now that would jump me ahead seven steps!