A homebody is someone who doesn't leave their house much. The "homebody economy" refers to economic activities that do or do not do well when people tend to stay at home, which is exactly what is occurring now with the coronavirus pandemic.
Things like online shopping, media streaming services, or cook-at-home meal programs tend to do well when ...
Since there is no change in consumer preferences, the demand function will not change.
The firms supplying skateboards face increased costs due to the wheels being more expensive. This will alter their supply function and thus the equilibrium price in the skateboard market may change, and hence the equilibrium quantity demanded may also change.