Plain plastic 10 litre (about 2.5 US gallon?) plant pots with pre-made holes in the bottom, nothing fancy. I raised them off the floor slightly with some thin plastic blocks and they are sitting in some trays made from cut down plastic containers. That way runoff (when it eventually happens) will collect without the pots sitting in it. I drilled the holes round the rims to give me something to anchor to if i LST during grows. I am currently watering in large circles around the stem, pretty much near the pot edge now, hoping to make the roots stretch out looking for it.