This air plant is mounted against one of two hollow cat sculptures attached to a base decorated with red and black plastic 'rocks' which are fixed in place. This makes the plant easy to care for as it can be watered simply by spray misting or dunking it along with the sculptures and base into water.
The cat models were designed by mere and published on Thingiverse as 'Lucy the cat' on 4th June 2012. They are described here: http://www.thingiverse.com/thing:24255.
The base is approximately 80mm in diameter. The translucent green cat is around 55mm tall and its companion slightly taller at approximately 60mm.