Our friend etched his house number onto a window on the front of his home. It has a crisp, modern appearance and offers privacy at one of his front windows. He did this himself, and we can see why since we've had a hard time finding a window film solution with a similar look...

Purlfrost offers the numbers above, but they're located in the UK. If you're handy, we could see buying a solid window film and cutting your number into it yourself.