Check out the Careers drop down at the top of the site, and look at the Hobby Projects section. - Read through the stickies and skim through the projects and go from there.

For general ideas, feedback, and suggestions on the actual work you attempt, you can look into the various sections of the forums for suitable locations. Design and Beginners may interest you and be useful if you haven't already dived in on there, but recruiting people to work direction on projects should be kept to the classified/careers section on these forums it seems.

Good luck, have fun.