This would be of no use to you cityfolk, but well useful out here in the country. Dutch designer Floris Schoonderbeek’s Raintap is a rain barrel that attaches to a drainpipe to collect roof runoff, as most rain barrels do. But it has the additional features of a sink in the top, powered manually by a foot pump down below. This provides a handy washing station that allows you to rinse off your hands, tools, food from the garden, etc. without having to take off your muddy boots to go inside.
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Water draining from the sink can be diverted back to your sewage system…
…or outside through a pipe and back into the earth.
Alternatively, you can hook it up to a spigot, as a backup source.
Water that doesn’t get used by the sink can be accessed from a tap on the side, allowing you to fill watering cans, buckets and such.
Made from recycled plastic, the Raintap runs €379 (USD $429).
Source: core77