There is a lot to pick from. What do you like to do? Are you city or country? Hiking or guided bus tour?
Boston is nice, don't forget to visit the North End, take in a Red Sox game and take the misses to Newbury Street then to the Boston Commons for a Swan Boat ride. You can get touresty and take a Duck Tour of the muddy waters and see the history of Boston.
South of Boston Cape Cod has some beautiful beaches. from there you can take a trip to the islands of Martha's Vineyard and Nantucket. Whale watching is also a good day trip.
If you are into hiking, the Mountains of NH are stunning. Mount Monadnock is the second most hiked mountain in the world and makes a great day hike to the top and back. You can drive to the top of Mount Washington where the 2nd most powerful winds have ever been recorded.
If you come over the 4th of July ask around and take in a fireworks display. Most areas have a good display. Boston has a great show with the Boston Pops playing at the Hatch Shell, but you need to get there early morning to get a seat for the night.
When in Maine, get a lobstah and have some real clam chowdah. You can also take a sail for the day or 1/2 day on a schooner.
Just remember the rules of Boston... Driving...
1. Making eye contact revokes your right of way.
2. Never use directional signals when changing lanes. They only warn other drivers to speed up and not let you in.
3. Boston Drivers expect to be flipped off, it is like the Boston wave.
4. Always look both ways before going through a green light.
5. When on a one way street, stay to the right to allow for oncoming traffic to pass.
6. Never, ever stop for a pedestrian unless he flings himself under the wheels of your car.
7. The first parking space you see will be the last parking space you see. Grab it.
8. Learn to swerve abruptly. Boston is the home of slalom driving, thanks to the Department of Transportation, which puts potholes in key locations to test drivers' reflexes and keep them on their toes.
9. When another car pulls up close behind you and "flashes their brights", slam on your breaks.
10. Be prepared for abundant construction detours.
11. Only those pedestrians not looking where they're going, head and eyes fixed firmly forward, are allowed to cross in front of traffic. Be sure to "break" hard and stop as close to them as possible.
- Tip: Only pedestrians crossing within "Cross Walks" have legal rights. Pedestrians outside of "Cross Walks" are "fair game" or "10 points".
Most Important of all... Never get in the way of a car that needs extensive bodywork.