A blueberry cobbler is delicious, and you can google a recipe quite easily. Also, blueberry jam is easy to make - just pick up a package of Certo and follow the instructions in the package.
You can't go wrong with the classics. You will be able to find plenty of recipes for muffins, pie, cobbler, pancakes, cheesecake, scones. You can stick to the basics, or add special ingredients for a unique twist.