Congress shall pass no law limiting the rights of persons to manipulate, operate, or otherwise utilize as they see fit any of their possessions or effects, nor the sale or trade of tools to be used for such purposes.
From Artraze commenting on this Slashdot story about the levels of DRM in Windows 7.
I think it maybe needs some qualification about not using your things to cause harm to other people, but it’s an interesting idea. See also Mister Jalopy’s Maker’s Bill of Rights from Make magazine a couple of years ago.