You really know what you are doing. Sadly, I couldn’t even find winter rye when I looked for it several years ago...
I, mostly, keep a herb garden. Most of them come back the next year. But I’m getting rid of my tomatoes and eggplants and I usually just dump them. They get kinda nasty at this stage...
Yeh, I don’t usually compost my tomato stuff, because by this time it has ugly stuff starting to attack the leaves.
I have no experience with egg plant.
Hello Miss M. . . . Lowe’s and Home Depot carry Rye Grass seeds.