As an offshoot of that, I highly suggest you check out Pennies for Peace. It's true, a penny surely isn't of much value, but lots of pennies can do wonders.
1. I put a jar just for pennies on my home bookshelf. Anyone who sees it can add to it.
2. You could put a jar just for pennies in your workplace, and invite others to add to it.
3. If you are a teacher, you could get your whole class/school to collect pennies.
4. If you go to a church, put a jar in the vestibule.
The idea is not to just make a donation, but to reinforce the worth of doing the smallest thing to help someone else. If we teach our children this principle, the world will be better.
Peace out.