EFF Chairman Brad Templeton sez, "Since I kept getting cards in my luggage every time I checked a bag describing how the bags had been searched "for my protection" I designed some shipping tape that has the U.S. 4th amendment printed on it in an endless loop. You can put it on packages, or over the zipper of your luggage. Now, if they want to search your stuff, they have to literally slice the 4th amendment in half in order to do it. Ok, it may not stop them but it's a nice metaphorical statement of protest.
"Too bad we can't wrap it around our phone wires. The tape's available as a gift to EFF members who renew, or via the EFF store."