Love this idea for multiple reasons: 1) equisetum grows so quickly and make even the newest newbie of a gardener feel accomplished and happy, 2) equisetum can get out of control and this container will prevent that from happening. I am going to plant some equisetum in pots this summer to create privacy and cover up some unsightly areas.
Aloe polyphylla 'Spiral Aloe' We installed these several years ago and then the house was sold to a family with small children... several popped play-balls and they contacted us for help. We took them them out and put in a kid's veggie garden. In the meantime they had grown so big it took a crew of four to get them out safely.