One can find hundreds of tutorials online, so I won't bother instructing you on how to build your own terrarium. After all, I did this four days ago and just because they are alive right now does not mean they won't croak at any moment. I bought the bowl about a year ago, and then each of the tall cylindrical vessels at Target. They were all under $15 - such a steal. Once my terrariums die I'll find another use for the vessels. What, you ask? A layered sand jar, of course. Or I may fill them with holiday lights for my next roof deck party. Or maybe I'll use the big one (standing around 14" tall) to store my orphaned socks. There are many of them, unfortunately.