In the past, TreeHugger has written about numerous alternatives to the standard toilet. From composting to dual-flush, we thought perhaps we had seen it all. Luckily, the folks at Gaiam are offering the Toilet Lid Sink, yet another take on the porcelain throne. Rather than explain this device, I'll leave it to their description: "with each flush of your commode, clean water that would otherwise go straight down the toilet is first routed up through a chrome gooseneck spigot to dispense pure water for hand washing". Although the concept isn't new, this design certainly appears to be less obtrusive than others. Furthermore, the Toilet Lid Sink installs without tools, and is relatively inexpensive. It even has a built-in soap dish.