Creating a sound story:
First, pick a ‘target sound’. For example, let’s say the target sound is ‘s’.
Then make up a story with lots of ‘s’ sounds in.
Say to your child ‘If you hear a ‘s-ssss’ then put your hands on your heads.’
Really emphasise the sound to start with, but you could make it less obvious as your child gets better at the game.
An example of a story could be…’One day Steve the Snake went to the sandy beach. He saw a sea serpent in the sea. The serpent jumped out and slithered towards Steve. He tried to slice him with his teeth!…(etc)
But just go for it, and make it up! An extension is that your child will begin to add to the story themselves with relevant words using the target sound.