NASA has a written policy that requires every space shuttle mission to carry at least one roll of “the gray tape.” Duct tape now comes in designer colors, and for the color-shy there’s a transparent version. The once-humble tape has hit the big time, and now there are duct-tape clubs, competitions and websites. In the words of Red Green, head possum on the PBS-syndicated The Red Green Show, “Spare the duct tape, spoil the job.”