Open the book you are currently reading to any random page and choose a sentence or phrase. Using that, write for eight minutes….
Here are a couple to get you started:
From Writers and Lovers by Lily King:
While I’m drinking, the phone rings.
From Feast Your Eyes by Myla Goldberg:
I am sorry I was not with you, I told her.
Feel free to change tense/pronouns; write for eight minutes and see what happens.