Look at your local VA groups. Go to them directly for sponsorship. Make sure you have a list of groups you want to donate to. They are usually more than happy to help.
Do NOTHING online.
I have been a member of my local American Legion for the past 25 years, held every office with the exception of Worthy Commander. Our small community just doesnt have the membership or surviving Vetrans to sustain our local lodge, otherwise it would go to them.