Tillandsia caput-medusae is a stalwart in anyone's collection. One of the most aptly named of the Tillandsia due to its resemblance to the mythical Greek goddess with snakes for hair, it is one of the most interesting species to look at and one of the most common. It can rot more easily than some of the others so care should be taken not to mist it but rather run it under the faucet or soak it in "good" water over night every several weeks or so.