I just take something like the taller cottage cheese containers, pop 4 holes on the side. The holes are about a 1/2 inch up on the side, not the bottom. Side holes allows the potting mix to hold more moisture. On the left prolif, you can see the top cut on the scape. Below the soil, the bottom scape goes almost all the way down. Leaving the scape so long below the soil holds the prolif right at the soil level. Keep the soil moist at all times. Right now its been outside in the shade. As it gets cooler, treat it as a very young seedling...such as a kitchen window. If you worry about water leaking out of the side holes...use another cottage cheese container as a sleeve. I would drop something like a plastic bottle cap in the bottom container to lift the top container up. That little separation boost adds better drainage.
I forget things sometimes. Doing it this way I do not have to check it that often.
Many blessings for a wonderful October full of good surprises!