Make Magazine. I found Make at a bookstore a few weeks ago (barnes & noble, I believe). It's small and expensive but worth it if you are up to the projects described on its pages.

• Make a Rubik's Cube
• Make a Volumetric Projector from JUNK. [A Volumetric Projector is ... what R2-D2 used to show Princess Leia in Star Wars.]
• Make a Home Mycology Lab [mushrooms]

Make is like ReadyMade but a few orders of magnitude up the intensity scale. As Marcus Chan of the San Francisco Chronicle said, "[make is] The kind of magazine that would impress MacGyver”