They are especially delicious with any kind of egg dish, or scrambled tofu or tempeh.
Herbs lose their intensity and fade out over time, with exposure to heat and light.
Keep them in the freezer. They'll absorb more flavor and be easier to eat than larger ones. The oven might get smoky during roasting. You can lessen this effect by basting out the juices a few times while the tomatoes are in the oven. This will also serve to concentrate the rich tomato flavor even more.