There are quite a few recipes for green tomato pie on the internet! And they are GOOD! I make one every fall when my tomato plants have quite growing and the tomatoes are about ready to suffer a heavy frost. Delicious! The Paula Deen recipe is particularly good, but all of them are decent.
I also bring tomatoes inside that have that hint of "gee, I'd like to turn red", and I spread them in a shallow cardboard box lined with newspapers, and then put scrunched up newspaper between them so they don't touch. Then all you do is put a section of newspaper over the top and check every few days. Quite a few of them WILL finish ripening, and even though they aren't the best just for slicing and eating, they are great to blanch and freeze for chili later on.
Enjoy!