ThinkGeek has a very geeky way of letting the mailman (and friends) know where you live: these solar LED Address Numbers light up at night, powered by the sun during the day. So no matter how dark it is, party-seeking friends will not have any trouble finding your address anymore. The numbers light up with two bright white LEDs. Because it is solar powered, there are no wires or timers needed for installation.
The plate with the numbers on it is about 1” from the wall, with the lights mounted overtop and behind they give a “backlighting” effect. The plate is made from anondized aluminum and completely weather resistant. The lights work for about 8 to 10 hours when the day before was a sunny one.