Air plants, no pot, no soil, no problem.
Tillandsia live on air and water through their leaves, displayed mounted on wood, rock or in a bowl - never in soil. From the tiny ionantha to the silver giant xerographica. Pet-safe and forgiving once you learn to soak, not just mist. Sorted by difficulty. There are 13 in the catalog.
Tillandsia Aeranthos
Tillandsia Brachycaulos
Tillandsia Bulbosa
Tillandsia Caput-Medusae
Tillandsia Harrisii
Tillandsia Ionantha
Tillandsia Stricta
Intermediate