We have been looking for alternatives to generic pancake syrup. We picked some blueberries a short while ago and so decided to give them a try at the job. We've had our pancakes with these a few times now and it's pretty delicious.
Combine the blueberries, sugar and water in a small saucepan; bring to a boil and cook at a boil for 5 minutes, scraping the bottom as needed to keep from burning. Reduce heat to low; simmer the mixture until thick, about 10 minutes. Serve warm.
I have stored mine in a mason jar in the fridge for later use and it's turned out well, albeit cold.