I am having a bit of a gardening romance with cacti at the moment. This one I potted up in a wee tea cup and received a few prickles for my troubles. But I still like it anyway.
These teeny-tiny ones are on the kitchen window sill so I can enjoy their company while I wash the dishes but I may pot them up together in a terracotta pot for the verandah or porch. I don't think there is much scope for them to grow in such tiny pots.