7.Noticed a little spike on some of the caps?
The little spike is there to punch right through the protective foil on a new tube. Just unscrew the cap, flip it around, and push it into the tube.
8.Hole in the ruler
It’s there for hanging them up.
9.Extra piece of fabric that comes with new clothes
We always thought it was given for the patches if we have any in future. But it’s actually there so that you can test how different laundry detergents will react to your new cloth.