I'm making a few signs to swap into the upper triangle of my tall bike, since it seems like such a large amount of space it would be a shame to waste it. I'm going to do some specific ones, like for the Earth Day celebrations going on tommorow, but I'd like some general ones too. Vote on what you like, or suggest your own sign ideas.
There is a lot of humor to be had with the 'high' jokes, but I don't know how far I want to push them... Depends on the event, I suppose!