Charging a vehicle at home is always going to be the most reliable method of keeping topped off, but a great way to increase range is to take advantage of opportunity charging. But, many public chargers use OEM equipment that may be difficult for the DIYer to find and/or understand.
Here is a great resource for finding public chargers: http://www.evchargernews.com/ Please use this website. Submit "I was there" reports, new charger locations, problems, etc. The better our charging infrastructure is, the better off we all are.