Use leftover tomatoes to grow new seedlings. You can end up with upwards of fifty seedlings in your pot, which you can them pull out as they get stronger and replant in your garden or in another container.
Did you know you can root tomato suckers for a second crop of fresh and healthy plants? Rooting tomato stems and growing new plants is a nifty little way of getting an additional tomato harvest for free. If you garden in an area with a longer growing season, cloning new tomato plants from stem cuttings is a great way to grow a second crop of healthy tomatoes in the fall when the temperatures are cooler.