I've never had a ton of money. Most of the time I don't even have money to freely spend on myself, so I'm forced to come up with new creations, new outfits, and ways to see things in a different light.

Not having wealth, I believe, teaches a person to use things they already have for a different use. Like above, you can take items that you thought about throwing away, like an old picture or mirror frame and some lace or corks and create a new jewelery holder or wall decoration.

Training yourself to think creatively like this and learning to see ordinary items in a different light can also increase your wealth because you would rather look for a way to re-invent an item/object rather than go buy something new that may be expensive. I believe that already having wealth takes this ability away from us because we would know that we have the money to access new items at any time.
It is not rare to come across a family that is happy because they work with what they've got even though they do not have much money.
http://voices.yahoo.com/how-being-poor-brought-family-closer-made-us-164427.html
I recommend reading the blog at the above link.
This blogger described how being "poor" made her family happier and brought them closer together. This made me realize that creativity doesn't always have to mean with material items. This blogger talked about how her family learned how to access resources. Being poor for them meant learning more. They had to do things on their own, reach out to the community and government resources. They learned how to "eat cheaply and creatively" by mixing foods together in order to create new meals. They came together because they spent time making each other happy, rather than buying materialistic items that could make them happy. This article represents the idea that "money can buy you something that'll make you happy for a period of time, but money can't buy you happiness." Money can't buy you happiness because it can't make you a happier person on the inside, it can only buy you things that can make you happy temperarily.
When you are poor, you learn to make do with what you have. You are creative with finding ways to do things in an economical fashion. You also know how to do without many things that other people consider necessities.
- A fellow blogger
http://voices.yahoo.com/how-being-poor-brought-family-closer-made-us-164427.html
If you're interested in ways that being "poor," or just not being "upper-class," is a way of living environmentally friendly, happier and healthier you should give it a read.