I am also planning to re-enter the workforce after 16 years. I would love to brainstorm with you. Maybe we could be motivation partners? Please email This email address is being protected from spambots. You need JavaScript enabled to view it.
Maybe you could luck out and maybe just what yor school needs? It's what happened to me! For five years I chaired all the fundraisers and when my youngest started school, the Principal asked what I was going to do now and offered me the part time job I have now!
The best part was, he teased me that I was in an informal job interview for three years! HA!
That last will align well with your situation. One of the tips I like (and I think it's one of these is to use the heading "Professional Experience" rather than "Work Experience" so it's a better fit for both paid and unpaid activities.