How do I handle a long gap on my résumé?, quality inspector here

My résumé shows a gap from a layoff and some health issues. I am in Providence, in case local advice matters. I have done some volunteering and a course during that time. What do you say in interviews?

Keep your skills fresh and mention anything recent. It shows momentum.

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