Moderation is key here. I would absolutely help out but not a planeful. Hit up your fellow passengers in firat or the flyers who look fun, smile or pay even ask you why you have a bouquet.
A bouquet is perfect.
I can see why you want to arrange something like the absolutely mindblowing home depot proposal, but thats a certain time and place aspect.
12 is a great number. Enough to trust secrecy and not too many as to become onerous.