The shoe repair when I was a child called it a side tap. The heel on the bottom was covered with a wedge of rubber or even metal, depending on what the customer wanted. Metal taps made a clicking sound when one walks on them, the rubber ones did not.
those 'things' under the cats nose are called whiskers
those 'bed things' are called gurneys
Those smoking pen things are referred to as e-cigarettes.
HUMPS
Those things are called scales. Scales are devices used to measure the weight or mass of an object.
They are called turnstiles
They are called scissors, but you pronounce it like sisors.
They are called stethoscopes.
There are several things you can try to prevent wedding crashers. One of which is to hire a doorman who has a list of those who RSVP'd.
Those are called barbell collars or barbell clips. They are used to secure weight plates on the ends of a barbell to prevent them from sliding off during exercise.
phosphenes
A clapperboard.