Just for fun and warming up, some possible writing prompts:
What was it like when you stayed home sick from school?
How did you celebrate Independence Day while growing up? (If you're not in the US, pick a different holiday.)
How was alcohol handled in your house? What were the rules and customs around it?
Did you know your grandparents well, or not? What did you know about them?
What were your favorite games when you were little? With whom did you play them?
never know what little details may catch, what incident or memory may
be connected to a larger story. These are exercises in memory, in
observation, in description. In standing outside what was once ordinary
and familiar, and capturing it from a different perspective.