3-month résumé gap, advice? - what worked for you?

I have been out of work for 3 months and worry about the gap. I am in Little Rock, in case local advice matters. I am not sure how much to explain.

A short, honest line such as 'family caregiving' is enough for most employers. They mostly want to know you are ready now.

I listed the volunteering and course under the same dates and kept the explanation to a sentence in the cover letter.