Library / Everyday objects & toys
A kind of cup · also called Foam cup, Polystyrene cup

About
A Styrofoam cup is an ultra-lightweight disposable drink container designed to insulate hot or cold liquids.
Foam cups range in capacity from tiny 4-ounce espresso cups to large 32-ounce beverage tumblers, with this medium coffee cup holding around 10 to 12 ounces. Because expanded polystyrene is composed of more than ninety percent air, the cup weighs far less than an equal-sized paper cup or ceramic mug. A stack of twenty foam cups still weighs less than an empty ceramic mug of the same size.
From Wikipedia
A foam food container is a form of disposable food packaging for various foods and beverages, such as processed instant noodles, raw meat from supermarkets, ice cream from ice cream parlors, cooked food from delicatessens or food stalls, or beverages like "coffee to go". They are also commonly used to serve takeout food from restaurants, and are also available by request for diners who wish to take home the remainder of their meal.
Read more on Wikipedia →Text from Wikipedia’s “Foam food container” article, CC BY-SA 4.0.
1 on the site
Weight
0.141 oz (4 g)
Quick answer
A standard Styrofoam cup stands about 4.3 inches (0.11 m) tall and measures 3.5 inches (0.09 m) across. Weighing only 0.14 ounces (0.004 kg), it is about as tall as an index card and lighter than a plastic pen.
Typical figures, the same ones every comparison on the site uses; real ones vary.
More like a Styrofoam cup
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Next to anything: a person, a car, another cup.