The Hoboken Historical Museum conducts some really interesting, off the beaten path walking tours through the city. They’ll give you more information in person but their website provides detailed descriptions of all the sites and addresses. You could definitely make a day out of it. A lot of craft fairs roll through here so I often end up here with my mother who’s a craft fanatic. They have other events here too, usually based on the season, so it’s worth checking in so often to see what’s up.