For tiny cactus cuttings, I always use the smallest pot possible just big enough for the plant to fit in. The advantage: after watering, the pot dries out quickly again. Anybody kno why do my monkey tail props keep rotting??? , I let them callus, have not watered, but they were outside and got some humidity in the pot but I didn't think that would kill them. Any SONGMICS Badregal, Badezimmerregal, 26 x 60 x 100 cm, Kchenregal, Schuhregal, Bambus TENNEKER Schneidebrett Bambusholz 40 x 25 x 3 cm HORNBACH Cactus Soil Guide Everything You Need to Know Planet Desert