The Guiding Light Mailbox is a simple but very practical solar-powered gadget for your home, making it easier for emergency vehicles, delivery services, home buyers, old friends and contractors to find your house when its dark.
It’s pretty hard to read house numbers at night, so this simple widget charges up during the day and lights up when it gets dark, making it really obvious what your house number is.
The gadget is just a widget that fits over a standard USPS mailbox a bit like a saddle on a horse. The mailbox saddle contains some long-life rechargeable batteries which are charged up in just 4 hours of sunlight. To fit the box, you simply fit it over your mailbox and screw it on. You get a total of 6 sets of numbers (each through 0 to 9) so that you can change the number to be anything you need. The light shines behind the number, making it really visible from the road-side.
The Guiding Light Mailbox is available for $79.95 per unit, and appear to only be available in the US.
Source: TreeHugger