There's only one thing to do in the late summer when there's an abundance of fruits: make jam! If you're scared by the idea of canning, with the sterilizing, and the jars and the equipment you need, then try freezer jam. All you need is fruit, sugar, lemon juice and liquid pectin. Look for recipes online, or on the instructions that come with the liquid pectin.
(also in the picture - spiced apple pear jam)
Blueberry Freezer Jam
4 1/2 cups crushed blueberries
4 cups sugar
2 pouches of liquid pectin
2 tbsp lemon juice
Crush the berries with a potato masher, in a food processor, or with your hands. Add the sugar, stir, and let sit for 10 minutes. Add pectin and lemon juice, stir, and let sit for 3 minutes. Fill containers with jam (glass canning jars can be put in the freezer). Put lids on, and leave containers for 24 hours at room temperature to set. The jam will keep in the freezer for up to a year, or thawed in the fridge for a month.