I remember someone mentioned the idea of an airplane banner ad I think in June of '07 (I had been a lurker for a couple months prior to joining).
A couple people locally called around but weren't able to get an ad for a reasonable price or it fell through, but I started calling on my own and found a place available for the fourth of July.
So I shouted out to my RP brothers and sisters on this forum and I start getting my paypal account filled with some people donating and a bunch of locals threw down some cash to actually do this thing.
Unbelievable.
It was the first RP Airplane ad, and while it wasn't the best since it was a bit rainy and cloudy, it was so worth it considering the idea was copied many times over!
Who knew a year later we'd have a RP BLIMP!
I'm not taking credit for the idea of AIR ads because I can't remember who wondered aloud about the idea, but like many of you said, it was so exciting to see people moving towards a common cause and the spontaneous creativity of ideas. Ideas that had never been done before and yet being able to overcome the obstacles of resources and time, and having it come to fruition.
It was an exciting time.
Prior to that, I remember going to a Marlins game with 20-30 people (one of the first meetups) and almost getting tossed out for the Ron Paul for President signs we kept holding up, hoping to get his name on TV.
I actually found the thread! Good history keeping!
http://www.ronpaulforums.com/showthread.php?t=2955&highlight=airplane+banner