Compact Fluorescent lamps, Fireflies, Glowworms, some underground worms!!, and some phosphorescent paints, all contain phosphors.
Clocks that has a pendulum may contain mercury.
It's called a Cathode Ray Tube (CRT). Electrons are streamed from the back of the tube and excite phosphors on the front of the tube (the viewing side). The phosphors emit light producing the television image. This technology (CRT) is rapidly being replaced by LCD; LED; OLED and Plasma Televisions.
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a computer and speakers. Some motors.
Light in fluorescent bulbs occurs when electricity excites the mercury vapor inside the tubular glass bulb.
Highlighters glow because of the phosphors that the black light contain and because of its chemicals in it.
some lightbulbs
Milk
Some of them contain items.
Any household items contain chlorophyll.
Household items doesn't contain polonium.
There are many common household items which contain hydrogen cyanide, however the toxic substance isn't usually released unless the items are burned. Some of the items which contain hydrogen cyanide are mattresses, upholstery, and carpeting.
Stump remover, Most chemical fertilizers,
Some examples of items that contain tobacco are cigarettes, snuff, and cigars.
Some household items that routinely contain antibiotics or other anti-bacterial chemicals are some soaps and most household cleaners like Lysol.
Although I would not recommend it, yes you can as most are non-toxic.If however you meant elemental Phosphorus instead of phosphors, NO, some form of Phosphorus are deadly poisons and white Phosphorus spontaneously ignites on contact with air!!!If you don't know the difference between phosphors and Phosphorus, that is the subject of a different question.
There are many objects in the world that contain carbon. Some items are seashells, pencils, fabrics, wood, carbonated sodas, and water.