Among certain circles, I am known as The Plant Killer. I constantly buy houseplants, holding garbage can funerals after only a week or two. It's kind of a downer being someone who can't keep a plant alive for any period of time, so I've decided to get serious and redouble my efforts. First off, I'm going to try a vivarium, rather than the cheap polka dot plants I've been buying at the grocery store. (Contrary to popular belief, a terrarium simulates a dry habitat. Vivarium is the general term.) There are even miniature ones that can be worn around the neck! Click through for eight vivarium/terrarium options. If you're more of a do-it-yourselfer, make your own using an empty jar.