Use a tape recorder or digital audio recorder with a USB connector to record environmental sounds such as cars traveling on a road, animal sounds, running lawnmowers and weather sounds. Save the files to a computer so you can play each sound individually. Alternatively, save the files to a CD with blank space between each sound.
Record individual sounds of musical instruments such as a guitar, flute or piano. Save each individual instrument file to your computer. Instruments can play recognizable tunes or you may only want the child to recognize which instrument made the sound.
Blindfold the child so the only major sensory input is auditory. Give the child earphones if you want to prohibit most other outside sounds from confusing him. Play each sound two or three times before pausing the play and asking the child to identify the source of the sound. If the child is unsure, play the sound again. Provide the child with the source information if he cannot identify with sound after the third or fourth attempt. Make a note of the missed sound and return to it at the end of the game before offering further review time.
Purchase or make a set of flash cards with various phonemes shown. Place a picture of an object with that sound on the back of the card and cover it with a flap so you only reveal the picture if you choose to do so.
Place three or four of the cards on a table or display board and make the sound for only one of the cards. Have the child indicate which phoneme represents the sound you made. Remove the card if the child answers correctly and replace it with a new card. Repeat the process until you have exhausted all of the cards or the child tires of the game.
Point to the card and have the child make the sound. Ask her to provide a word that uses the sound. Alternatively, have her write or spell a word that uses the sound.