Recently I said something silly to a client:
...and because we're not using a database, you'll be able to run this map offline on your local computer.
Great! They give lots of presentations where they want to show off the map and this means they wouldn't have to rely on conference wifi, the most overstretched resource on the planet. We delivered the completed map to be deployed on their site along with the instructions:
Just open index.html in your web-browser and you'll be up and running.