What do I do with all this duct tape and plastic sheeting left over from 2003 when the Bush admin told me to cover my house to protect against terrorist attacks?
Patch your roof.
A. You can never have too much duct tape (as long as you keep it in a controlled environment), and B. plastic sheeting is great as paint dropcloths, creating temporary protective structures during spray-painting projects, a more sophisticated outdoor rain-proof couch-fort substitute (bring your own juicebox), etc.