You buy things with this.
money
What is this?
a blanket
You open your door with these.
keys
What are these?
tickets
You find your way with this.
compass
You put your money in this.
wallet
What is this?
money
What is this?
a rucksack
You buy these when you take the train or the bus.
tickets
What is this?
a mobile phone
You sleep under this.
blanket
What is this?
a towel
What is this
a wallet
You take this when you swim.
towel
What are these?
keys
What is this?
a compass