Whenever we go to Maine I usually make a pilgrimage to a number of favorite places, such as the Portland Head Light (my favorite place) and L.L. Bean's in Freeport.
I also make an annual pilgrimage to the Old Port in downtown Portland, where I always visit the Stonewall Kitchen Company Store.
I make a lot of my own jams and jellies, but there are some that they offer that I just can't reproduce.
They also have delicious salsas and sauces, not to mention a host of kitchen and cooking-related items.