I have not canned under-ripe tomatoes.
How about a big batch of Fried Semi-Green Tomatoes before you leave? ;)
Take them to your Food Pantry? I was at ours yesterday and there was an amazing amount of garden produce, which I thought was really nice.
No cukes or zukes, though - also very nice, LOL!
These are not green.
They are more orange. I have them in a warm sunny window and will be doing them tomorrow.