However, we can get creative! Here are a few options:
* Using proper nouns:
* X marks the spot: This is a classic phrase, playing on the "x" representing a treasure location.
* Xander's xylophone: This example uses names and a word beginning with "xy."
* Using words with "x" within them:
* The boxer's excellent exercise: This uses words containing "x" but the "x" itself isn't the starting sound.
* Using onomatopoeia:
* The xylophone's xylophonic xylophony: This uses onomatopoeia to emphasize the sound "x" makes.
Let me know if you have any other ideas or would like to explore these options further!