All it takes to propagate African violets is a large healthy leaf, cut in half. To turn the leaf into a pretty gift, snip it into the shape of a heart. Using clean, sharp scissors, remove a leaf with 1 inch of stem from a plant, and shape the leaf. Fill a small pot with fresh potting soil, and poke a hole in the soil with a pencil. Insert 3/4 inch of stem, pack soil firmly around it, and water well. (While rooting, the leaf should be covered with a glass jar or a plastic bag and removed from bright light to keep it moist.) A new plantlet should emerge in 6 to 8 weeks.