I recently received three Tillandsia ionantha plants as a gift. The set came with some teardrop-shaped glass "terraria" in which to display the plants. Each container has a large hole to put the plant in and a few small holes above that, presumably for ventilation.
The kit also came with some sand and goofy "sea life" decorations, not shown here.
I know that cacti and succulents are often sold in similar containers, which are actually quite harmful to the plants. Is it safe to use these containers with my air plants, or will I be dooming them to a slow death? And if I do use the containers, what can I do to maximize their suitability?