This common flower can be propagated into a whole pot from just one leaf, so you never need to buy another one

Epiphyllum. The flowers of Epiphyllum are extremely beautiful, but their blooming time is very short, only a brief 4 hours, and they only open at night. In that moment, it seems all the waiting exists just for that one beautiful instant. Propagating Epiphyllum requires leaf cuttings; choose old leaves, ones that are more than two years old, insert the leaf into the pot, and use a small knife to make a cut where the leaf goes into the potting soil, as this helps with rooting

Peperomia (Peperomia obtusifolia). The leaves of Peperomia are very small and compact, both attractive and healthy. Peperomia is propagated by leaf cuttings: choose leaves with petioles, healthy and sturdy ones, then leave them in a ventilated place to dry, insert the leaves at a slant into the soil with the leaf facing down, spray a little water, keep the potting soil moist, and provide plenty of light and a ventilated environment; roots will form in half a month

Pennywort (Hydrocotyle vulgaris). The leaves of pennywort are round and very cute, like little copper coins. Pennywort also propagates very quickly: select healthy pennywort, pull off the stems and leaves at the root, soak them in a cup, and you can add a little fertile mud and sand. After a week, the pennywort will be growing very vigorously; if you want to grow it hydroponically, just switch to a larger container