I was thinking, what if ALL the bike collectives celebrated FREE PICKLE Day?  Or FREE PICKLE WEEK, even.  It could be a pickle with every purchase, ending in a big ole' pickle potluck/feast like with sauerkraut and kimchee and pickle bucket panniers (I recommend pickled ginger) works.  I mean, seriously.  You could even sanitize some spokes and serve pickles on spokes.  it could be maybe even used as a fundraiser or volunteer lure event if you're due for one of those.