Celibacy Is The Issue, Inc., a 501.c3 nonprofit organisation, has spent the past six years locating and recruiting married priests, nudging them back into public ministry for the people who need them. CITI's database now consists of over 2000, covering almost every US state, Canada, and many countries. Canon Law says they're still priests and that their sacraments are still valid.
Some pastors invite married priests to do weddings, baptisms, funerals, homilies, etc.
One parish lists the local married priests in the weekly bulletin for emergencies. They do baptisms, first and second marriages, and funerals. They also visit and anoint the sick and make themselves available for in-home Masses, as well as for Bible Study and other discussions. Some congregations from closed churches stay together, with married priests. Back to the future.