A collection of random Bad Ideas (by me, not collected from elsewhere):
1) Reality TV Show: "So You Think You can Dance Like an American Fifth Grader" [OK, that's more parody than a bad idea...]
2) Cell Phones with customizable scents. Just like you can customize your phone to ring a different tune for different callers, embed one with technology to make different scents. So rather than an annoying ringtone, you get a slight waft of something, telling you that you have a new text message, or call. Different scents for different folks (flowery, acrid, and so on). Scent, unfortunately, is not as quick as sound so that's a negative factor here (missed calls if you're in so much as a slight breeze). And it's also as public as sound ("Is that you or did your boss just call?")
3) One upon a time I actually drafted a parodic post in response to a news article on NASA's budget troubles, though I don't think I ever posted it. Might lead Bad Ideas II with that one later on, but given proximity of this post with the previous one I'll hold off for now (though it may have come through on an earlier posting).
1 day ago