According to Google, its newest, environment-friendly initiative is Google TiSP (BETA),
a fully functional, end-to-end system that provides in-home wireless access by connecting your commode-based TiSP wireless router to one of thousands of TiSP Access Nodes via fiber-optic cable strung through your local municipal sewage lines.
Google TiSP is free, and you must follow very, very carefully the instructions, which include this part with your toilet:
to attach the sinker to the loose end of the cable, take one safe step backward and drop this weighted end into your toilet.
Have fun, and of course, free WiFi Internet!