The reality is that a simple, one-click link to full Minecraft survival does not exist. However, the spirit of that search lives on in projects like ClassiCube and Eaglercraft. If you want to build, break, and explore during your free period, your best bet is to download Eaglercraft 1.5.2 at home, put it on a flash drive, or use the WebGL version of ClassiCube.
: Features Eaglercraft 1.5.2 and 1.8, alongside Minecraft Classic and survival-based spin-offs like Minecraft Defense.