If you’re still using pen and paper to write to people, MapEnvelope might be one of the more entertaining ideas to brighten up your day.

The service is currently free and allows you to print any Google map as an envelope.
Simply enter your location, message, and then hit preview and you’ll get an envelope that you can print out and cut out.
Remember, you don’t have to type in where you live. If you want to be fun, try places like “Area 51”, “Disneyland”, or even “Statue of Liberty”.
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