A little:
-He saves a little money every year.
-You ate a little cookie.
-She smiled just a little.
-I need a little romance.
-I know a little cafe in Roma.
A few:
-You will stay a few days in Paris.
-I have a few strawberries.
-A few women visited you.
-There are a few children at the bus-stop.
-She has a few books in her bag.