Shift in supply and or demand curve

A new study finds that finger puppets increase curiosity and learning for children aged 2-3, encouraging young parents to choose this toy as a holiday gift.
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Consider the market for Paw Patrol finger puppets. What happens?

The positive effect of finger puppers on child learning increases the number of parents who are willing to buy this toy for their children. Therefore, the demand for these finger puppets increases, represented by a shift of the demand curve for finger puppets to the right.

Market For Finger Puppets

Parasites are causing huge declines in bee colonies around the U.S. Meanwhile, "hot honey," honey with a kick, gains lots of popularity in the South.
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Consider the market for honey. What happens?

A bee shortage will increase the costs for honey producers, causing a decrease in supply&mdash;shifting it to the left. However, thanks to the new popularity of hot honey, demand will increase and shift to the right.

Market for honey

At the beginning of the COVID-19 pandemic, individuals become more concerned with hand sanitizing. Several alcohol distilleries decide to shift production from alcohol to hand sanitizer.
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Consider the market for hand sanitizer. What happens?

If consumers become more concerned about hygiene and hand washing, the demand for hand sanitizer will increase. An increase in the number of hand sanitizer producers means that the supply of hand sanitizer will also increase&mdash;represented by a shift of the supply curve to the right.

Market for hand sanitizer

During the COVID-19 pandemic, both ridesharing drivers and passengers are worried about traveling in a car with strangers and reduce the number of trips they take.
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Consider the market for ridesharing services. What happens?

If consumers become more concerned about travelling with strangers, the demand for ridesharing service will decrease&mdash;represented by a shift of the demand curve to the left. Furthermore, if drivers are also worried about driving unknown passengers, supply will also decrease and shift to the left.

Market for ridesharing services

Computer chip shortages increase the price of new cars.
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Consider the market for used cars. What happens?

An increase in the price of new cars will increase the demand for their substitutes, such as used cars. This will increase the demand for used cars, represented by a shift of the demand curve to the right.

Market for used cars

Several new internet service providers enter the market. Meanwhile, new satellites lower the cost of providing internet service.
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Consider the market for internet services. What happens?

An increase in the number of sellers increases supply and shifts the supply curve to the right. A decrease in the cost of providing internet services also shifts the supply curve to the right.

Market for internet services

Hula hoops are hailed on TikTok as the latest, greatest weight loss device. Meanwhile, all stores that import plastic toys into the U.S. must pay a new tariff.
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Consider the market for hula hoops. What happens?

A rise in the popularity of Hula Hoops increased demand - represented by a shift to the right. A tariff on Hula Hoops increased input costs - decreasing supply and shifting it to the left.

Market for hula hoops

Consumers expect that a superior type of wireless earbuds will launch in six months. Meanwhile, the price of computer chips that earbud producers use for the production of the current earbuds has increased.
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Consider the market for earbuds. What happens?

If consumers think that a better wireless earbud will be out soon, they will hold off on making purchases. This will decrease the demand for earbuds&mdash;represented by a shift of the demand curve to the left. An increase in producers' current costs will decrease supply and shift the supply curve to the left.

Market for earbuds

The price of laser eye surgeries that reduce the need to wear glasses falls dramatically. Meanwhile, new technology lowers the costs to produce eye contacts, a substitute for eyeglasses.
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Consider the market for eyeglasses. What happens?

Both events affect the demand for eyeglasses. Because the relative price of substitutes has fallen, the demand for eyeglasses will decrease, shifting the demand curve to the left&mdash;without affecting supply.

Market for eyeglasses

A celebrity suffers from a bacterial infection contracted while working out a gym. Meanwhile, a new exercise craze focusing on outdoor workouts sweeps the nation.
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Consider the market for gyms. What happens?

Both these events affect demand for gyms. Both would lower the preference for working out in a gym and therefore the demand curve would shift to the left.

Market for gyms

A new baby boom takes place in the U.S. At the same time, the government starts subsidizing daycare centers.
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Consider the market for daycare centers. What happens?

A baby boom will increase the demand for goods and services related to babies, including daycare centers, and shift the demand curve to the right. A subsidy for daycare centers will increase the supply of daycare centers&mdash;shifting the supply curve to the right.