There are also plenty of fruits and veggies that can regrow by starting off in water and then being transplanted to soil for full growth and harvest; Avocado, Beets, Parsnips, Potatoes, Sweet potatoes, Turnips, Ginger, Mushrooms, Onions (white/ yellow/red) as well as Pineapple to mention some.
Apart from regrowing vegetables and fruits, Regrow can also hold allium, hyacinth bulbs, amaryllis onion, acorns as well as airplants. Airplants are plants without roots, which grows without soil and water. The airplant absorbs all the moistures it needs through the leaves. Regrow can also hold candles. If you put water underneath, the candle will put out itself!