If you happen to live in an odd part of town that is damn near impossible for delivery drivers to find, this may be a good addition to your household. This device charges with delicious rays of sunlight and can then display up to five numbers, commonly for the address. The entire unit itself is approximately a foot wide, so easily mountable anywhere you please.
This device would also be good for folks who have easy addresses to find, but they just enjoy spelling out naughty words in digital numbers. Hooray for 80085.