free time
Known as the ballroom decade, the 1910's involved a lot of dancing. Such dancing included the Fox Trot and the Tango, and most popular restaurants had dance floors at which people could perform these dances.
After Arthur Wynne invented the crossword in 1913, people began enjoying these enigmas as another pastime.
Many children in this decade were quite enthusiastic about the Lincoln Logs that were introduced to the U.S. in 1916. They spent their free time constructing log buildings and any other thing they could imagine.