FreshBrain is all about creating - being creative!
If you already have an idea of what you want to do, Start a New Project.
If you aren't sure, take a look at the great Activities and Projects on the site. Some of them are listed below. If you find an Activity that looks interesting, join in. If you see a Project that looks right, ask to join or start a similar one of your own. Still not sure, take a look at the amazing Tools.