US Mail/Duct Tape

If you're mailing a package, seealing the package with duct tape is only acceptable sometimes, as it depends on which mail clerk you get. It's typically frowned upon because it's easy to remove.

Backpack/Umbrella

If you're wearing a backpack, have an umbrella, and it's raining, wear your backpack on your chest so it won't get wet. If it's on your back it most likely won't get covered by the umbrella, or the umbrella-runoff will drip onto the backpack and soak it.

Burger patties

If you're molding burger patties by hand, make sure the patties are shaped are flat and wide, with a larger diameter than the burger you intend to eat after the cooking process; the heat from the stove will cause the burger to shrink inwards, altering the raw patty to become smaller and fatter.