Here’s a neat idea if you’re into studio-caliber portrait lighting but you just don’t have a studio space. You can turn normal daylight into nice, "north light" illumination. There’s a long tradition of world class photographers using daylight to make impactful portraits–a guy named Avedon comes to mind–so why not join that group? Check out the article by David Hobby on his Strobist blog to learn how and why he set up his inexpensive and portable daylight studio. Best of all this setup requires minimal equipment and can be utilized anywhere that you can find the sun.