Ben Cohen of Ben & Jerry's is riding around the country in a rainbow colored van, stamping $1 bills with messages like "not to be used for bribing politicians," as a way of raising consciousness about the impact of money in politics in the wake of the Citizens United Supreme Court verdict, which opened the doors to infinite campaign financing by special interests.
He's seeking a constitutional amendment that overturns the verdict, and he's got 15 states onboard. You can sign a petition, buy a stamp and stamp your own money, and hold stamping parties with your friends. The full list of stamp messages is:
"Not to Be Used for Bribing Politicians".
"Stamp Money Out of Politics"
"Corporations are Not People"
“Not To Be Used for Buying Elections”