Blueberry Lime Jam is a favorite around here.
I agree with the freeze more advice. My DH's grandma has lots of blueberry bushes and we freeze gallons and gallons to share in the family. DD loves blueberries straight out of the freezer and I add them to muffins and pancakes frozen too.
You can also make a slump, buckle or cobbler. Peaches are just coming into season right now and peach blueberry cobbler is awesome.
Oh and we made these lemon blueberry popsicles
recently and they're yummy, but messy.