When I smoke out of a cig(several times now) I usually empty out a Newport 100 and use that. That way, when its packed enough I can rip off the filter completely and end up with a decent sized joint.

You can't get them fat like your usual awesome joint, but you can pack them tight.

Be aware that ripping the filter off can cause you to inhale herb when you smoke.

One way to prevent that is to roll your own cardboard filter and shove it down in before you start loading.