Neoregelia lilliputiana is very lovely, cute miniature species in the Neoregelia Genus.
Neoregelia lilliputiana grows to only a few inches tall making it the perfect Vivarium/terrarium plant. It is easy to grow requiring a regular mist or wetting preferable with rain water. It has quite thick green leaves that are lightly speckled. New plants or 'pups' are produced on long runners/stolons. When a rosette is mature it will produce attractive violet flowers.
Here is one plant mounted on tree fern bark with some moss.