The Noun Project is a neat site that's trying to create clean, simple icons that companies can use on their sites free of charge.

From the company's mission statement:

The Noun Project collects, organizes and adds to the highly recognizable symbols that form the world's visual language, so we may share them in a fun and meaningful way.

Here is our pledge to you:

FREE

The symbols on this site are and always will remain free. We believe symbols can not be effectively shared with the world if they are not free.

SIMPLE

Everyone likes simplicity. We want you to be able to come to our site and effortlessly find and obtain what you are looking for. Simple as that.

FUN

We think a language that can be understood by all cultures and people is a pretty amazing thing. We also think our symbols and the objects or ideas they represent are works of art worth celebrating.

HIGHEST QUALITY

We get excited about things like scale, proportion, and shape. We are committed to design and quality in everything we do.

What's a good symbol for the word NOUN?