=v= For those of you who have Critical Mass on the *first*
Friday of the month (or even those of you who don't), the
next first Friday is July 4th. In the U.S., we call that
Independence Day. CM could celebreate it as something like
Independence-From-Oil Day (or, mordantly, Oildependence Day).

=v= The fine folks in Chicago Critical Mass have set up a CM
flyer exchange, with a few red/white/blue themed entries:

http://www.chicagocriticalmass.org/flyer_exchange.html

Note especially the "Real Patriots Don't Burn Oil" ones.
<_Jym_>