Hi we had to research for homework as well!
Climate change could literally mean anything, but the general theme is trying to tackle rising temperatures in the atmosphere due to global warming. It could refer to trying to cut down on CO2 emissions in everyday life.
Playing games is the simple one imo- it's just about different types of games and entertainment, like monopoly or chess.
Securing/storing personal possessions refers to things like bags, safes, wallets etc.
Hope this helped!