If you have a passport or enhanced drivers license at trip along the Thousand Islands parkway (views of the St Lawrenence) to Gananoque which is a picturesque town (where I believe the best tour of the Thousand Islands departs from)and then to Kingston, ON. Visit the locks at Kingston Mills that are still hand operated and exactly the same as when built when Canada and the USA were at war. There is an interpretive museum on the site. Old fort Henry is nice to visit as is the downtown proper, Cookes Downtown has interesting foods from all over the world. Kingston farmers market open tuesday, thursday and saturday can be interesting.
In Clayton, NY the antique Boat museum and the 2 wineries (one near the base of the thousand Island bridge) and the brewery just before you get into Clayton all make interesting stops While going towards Clayton just past Grass Point state Park is the GALS with huge ice cream cones reasonably priced,
Alternate way to get to Kingston is to go to Cape Vincent and take the Horne's ferry to Howe Island then drive across the island to the Kingston ferry. Hornes ferry is a pay ferry. The Kingston ferry is free
More later
http://hferry.com/