This is an example of how to stimulate creativity, plus get you playing riffs and ideas that you might not have come up with ordinarily.
I have created a riff from my birthday which is the 16th of May, 1974.
Damn, that was a long time ago!
The day and month are used for the verse.
The year has been used for the chorus.
Create your own number set from your birthday, and your partners or friends, parents children etc. How they sound?