I don't have much advice, and I haven't even been out of the workforce. But I have been at the same job for almost nine years. And I know for sure the last two places I worked aren't there anymore, so I fully commiserate with that. I would put them on my resume anyway, perhaps with a note that they are now dissolved/bankrupt/no longer in business.
DD#1 "JellyBean" 6/08
DD#2 "Ha" 6/10
"Theory is great, but as I'm in the trenches of diapers and dishes and ear infections, I try to relax and focus on what's most important: love."--mjs64