I made this really good zucchini blueberry bread last week:
http://allrecipes.com/recipe/blueberry-zucchini-bread/
(note, makes more like 6 mini loaves, and can safely cut back the sugar a bit). Freezes very nicely.
As others have said, blueberries themselves freeze really well. and there is nothing like blueberry muffins in February.
Also pancakes and smoothies.