Child-Proof Pill Bottle Caps
The majority of these pill containers have unusual threaded covers on both sides. One of these sides has normal threads and may be screwed on top of the pill bottle without “locking” it. This is so that if you don’t have any little children and are having difficulties unscrewing the childproof cap, you can use the opposite side of the cap to open your medicine when you need it.
Notebook Margins
Manufacturers started adding margins to writing paper to preserve your work. Rats used to be a common resident in many people’s houses, and one of their favorite treats, in addition to everything else they could eat, was your paper. By allowing blank areas around the borders for the rats to eat through first, and by protecting the writing on the outer edges from regular wear and tear, broad margins on paper protected against losing critical work.