Which American tech company started with its founders' idea to rent out an air mattress in their San Fransisco living room to travelers hoping to avoid the city's high cost of rent?

(a)  

Eric Yuan is a former Cisco engineer and executive that left the telecom giant to found what speedy meeting company in 2011? The company released its first version of their eponymous software two years later and had a "breakout year" in 2020.

(a)  

In education, the acronym STEM stands for "science, technology, engineering, and mathematics." When an A is added to form the acronym STEAM, what does the A stand for?

(a)  

In the first flights of the Space Shuttle program the fuel tank was white and in subsequent flights it was decided to leave it unpainted. What was the purpose of this change?

(a)  

Though its original iteration was "monoaural" and wooden, it's now seen with medical professionals world wide and nearly always is biaural (that is, both ears are used.) What is it?

(a)  

At the beginning of the last century, such masks were popular. The owners of these masks were united by the love of a certain game. Which game?

(a)  

While building magnetrons at MIT in the 1940s, Percy Spencer noticed a melting chocolate bar in his pocket. Deeper investigation and exploration led to the invention of what household device? Spencer received no royalties for this invention, first marketed as the Radarange.

(a)  

The first semblance of this device appeared in 1920. It was a paper roll between wooden sticks that rotated by hand. Ten years later, a device appeared that did the same, but automatically, depending on the speed. Name this device.

(a)  

In 1932, one German company decided to make this product so that it would fit in the pocket of any sports jacket, and would not break and would have weight like an ordinary one. Under what name do we know this product?

(a)