Someone first has to design a eye catching ad. (Black and white ads are cheaper in print though.) One that doesn't violate any Lucas or Disney trademarks. This can be used wherever it eventually ends up.
We would all have to have our real names signed to it. I know this will give some people the willies, (myself included) but we won't be using our fan names anyway.
I realize there's a good argument that "print is dead" in this day and age. (Variety may also not be as widely read as it used to be.) So if someone knows a better place to run such an ad, speak up. :)
Kickstarter might be a good idea to get people outside the site involved, but I've no idea how it works.